season 2
1 : Rise of the snakes
Immediately continuing the story from where the first season left off, Sensei Wu implores the Ninja to start training again to prepare for his brother's return to Ninjago, but ever since Lord Garmadon has escaped they have done nothing but play video games and waste time. Sensei lectures the four on "not putting off onto tomorrow what can be done today", saying that the four have not yet reached their full potential. The Ninja laugh, saying that they'll be ready when Lord Garmadon returns. Their meeting is interrupted by Nya, bringing word that Garmadon was spotted in Jamonicai village, sending the Monastery to a state of panic. The out-of-shape Ninja then travel to Jamonicai village to stop Lord Garmadon, only to find the sighting to be false and the fake Garmadon to be just his son who has escaped his boarding school for bad boys, Lloyd Garmadon.
Lloyd tries to terrorize the village to rob them of their candy, and threatens to release the "Serpentine" on the villagers, but instead is run out of town by the ninja. Before returning to the Monastery, Kai discovers he has accidentally taken Sensei's bag in the rush, and finds a scroll that tells of the prophecy of Ninjago; one ninja will rise above the others and become the Green Ninja destinated. None of them are able to contain excitement, boasting to the others that himself will become the green ninja. Meanwhile, Lloyd wanders the frozen wastelands of Ninjago, upset his plans have gone awry. Mistakenly, he uncovers an ancient tomb containing a tribe of the real serpentine known as Hypnobrai. The Hypnobrai general attempts to hypnotize Lloyd, but his short size causes the general to seeing himself in a reflection, and letting Lloyd take control of him. The tribe is now under Lloyd's control, who sends them to steal all the candy in Jamonicai. The Hypnobrai use their power to hypnotize the villagers, bringing more power to Lloyd. All consumed by selfishness, they try to hold a tournament to find who is the best of them all, and thus become the green ninja. Unfortunately, the idea backfires when Kai's sword starts an elemental fire which cannot be put out. Sensei Wu arrives and uses the Shurikens of Ice to stop the fire, before explaining the ninja must agree to continue their path to unlocking their potential before any of them will become the green ninja. Sensei senses the presence of the Serpentine and quickly alerts the ninja, who rush to the village and are able defeat the Hypnobrai, forcing them to retreat. However, Skales, the second-in-command for the tribe, tries to hypnotize Cole before leaving town, forming a scheme to destroy the ninja for revenge. But Nya comes to the rescue just in time. After stealing the Snake Staff, Nya uses the anti-venom inside it to cure the villagers. Later, Skales realizes that he can see what Cole is seeing.
Lloyd tries to terrorize the village to rob them of their candy, and threatens to release the "Serpentine" on the villagers, but instead is run out of town by the ninja. Before returning to the Monastery, Kai discovers he has accidentally taken Sensei's bag in the rush, and finds a scroll that tells of the prophecy of Ninjago; one ninja will rise above the others and become the Green Ninja destinated. None of them are able to contain excitement, boasting to the others that himself will become the green ninja. Meanwhile, Lloyd wanders the frozen wastelands of Ninjago, upset his plans have gone awry. Mistakenly, he uncovers an ancient tomb containing a tribe of the real serpentine known as Hypnobrai. The Hypnobrai general attempts to hypnotize Lloyd, but his short size causes the general to seeing himself in a reflection, and letting Lloyd take control of him. The tribe is now under Lloyd's control, who sends them to steal all the candy in Jamonicai. The Hypnobrai use their power to hypnotize the villagers, bringing more power to Lloyd. All consumed by selfishness, they try to hold a tournament to find who is the best of them all, and thus become the green ninja. Unfortunately, the idea backfires when Kai's sword starts an elemental fire which cannot be put out. Sensei Wu arrives and uses the Shurikens of Ice to stop the fire, before explaining the ninja must agree to continue their path to unlocking their potential before any of them will become the green ninja. Sensei senses the presence of the Serpentine and quickly alerts the ninja, who rush to the village and are able defeat the Hypnobrai, forcing them to retreat. However, Skales, the second-in-command for the tribe, tries to hypnotize Cole before leaving town, forming a scheme to destroy the ninja for revenge. But Nya comes to the rescue just in time. After stealing the Snake Staff, Nya uses the anti-venom inside it to cure the villagers. Later, Skales realizes that he can see what Cole is seeing.
2 : Home
At the Monastery, the others begin to notice Zane's odd behavior, but Sensei explains Zane is the ninja's brother, and like all brothers, he is different. After a mail delivery, Jay questions Zane why he never recieves any letters from his parents, to which Zane responds he had been an orphan all his life and never knew his family. Wu tells him the Monastery is now his home, and he and the ninja are his family, but Zane only leaves sadly. In the meantime, at the Forest of Tranquility, Lloyd instructs the tribe to create a fortress to "rule" Ninjago from, where Skales and Rattla conspire the downfall of Slithraa, the current tribe leader. Later that night, when Zane goes outside to take out the trash from dinner, he finds a falcon that mimmicks his every move, and is presuaded to follow him. He soon discovers Lloyd's treehouse, and brings the others to help destroy it the next day. After analyzing the structure, Kai thinks that if they destroy all four ropes holding up the fort, it will crash down with the snakes inside it. The plan almost succeeds, but Skales enforces Cole's hypnotic spell, causing him to fight the ninja and nearly bring the fort down with them on it. In the nick of time, though, Sensei and Nya arrive on Flame, Kai's dragon, while Sensei plays a flute that breaks Cole's spell. After rescuing them and destroying the fort, he explains the flute is as old as the Serpentine themselves, and the flute is sacred, as it will play a large role in the Serpentine's downfall. When returning to the Monastery, they find the entire building demolished and burned to a crisp, causing the ninja to turn on Zane and blame him for destroying their home. When they go to apologize, however, they find Zane leaving on his dragon, Shard. Later that evening, Zane returns and explains he was following the falcon, which led him to Destiny's Bounty, the ninja's new home. Meanwhile, at the Hypnobrai tomb, Skales challenges Slithraa to a fight in the Slither Pit for command of the tribe, which Skales wins. Now in control of the Hypnobrai, he banishes Lloyd, demanding he never return. He leaves, but steals a map to the other tribe tombs before he exits, and plans yet another act of vengeance.
3 : Snakebit
After leaving the Hypnobrai tribe, Lloyd uses his stolen map to find the Fangpyre tribe's tomb, where he offers an alliance to get revenge on the Hypnobrai and the ninja. Fangtom, the tribe general, agrees, but first plans on building up his army by using his tribe member's venomous snake bite to transform anything to snakes. Meanwhile, Jay's parents, Ed and Edna arrive at the ship visiting, much to Jay's annoyance. After being embarressed multiple times by his mother, Jay ushers his parents back to their junkyard, where they are assualted by the Fangpyre and given the venomous snake bite while the others infect vehicles in the yard to their own evil use. The next day, Jay keeps his promise to his father and visits the junkyard with the other onfoot, as the ninja's dragon migrated east to begin a transformation in their stage of life. When they arrive, the place is quiet, which worries Jay, since his parents are apparently "never quiet". He finds Ed and Edna captive and beginning their transformation to snakes, while meanwhile the Fangpyre fight the ninja. Sensei explains the only to change Jay's parents back is to get the anti-venom from the staff, but the Fangpyre begin to retreat, carrying the staff with them. After discovering their weapons have the ability to transform to vehicles, Jay uses his Storm Fighter plane to steal the Snake Staff from the Rattlecopter, which makes the Fangpyre follow the ninja back to Destiny's Bounty. While there, Nya creates the anti-venom and accidentally loses the staff, and Ed fixes the "defense system" Jay was working on earlier in the episode, allowing them to take flight and escape the Fangpyre.
4 : Never trust a snake
Zane has a dream about the green ninja fighting Lord Garmadon and then tells the other ninja about it during training. Sensei Wu then gives the ninja a riddle to solve: "What is the best way to defeat an enemy?" Meanwhile Lloyd Garmadon and the Fangpyre prepare to attack the Hypnobrai. However, Skales and Fangtom turn out to be friends and betray Lloyd. The ninja continue training and Sensei Wu checks up on them to see if they have found the answer to the riddle. Kai says it is "to train", but Sensei answers that he is wrong and orders them to continue to train. Lloyd then finds the tomb of the Anocondrai and frees Pythor P. Chumsworth. They then create havoc around Ninjago and return to the Anocondrai tomb with a bounty of sweets. Together they then take over the Boarding School for Bad Boys that kicked Lloyd out. The Ninja then arrive to stop them, and they free the tied-up school students. They also find Kruncha and Nuckal tied up in the same room, Cole agrees to free them if they promise to leave Ninjago. Pythor and Lloyd are cornered on the roof and Pythor betrays Lloyd by stealing the map to find the other tribes and abandoning him. Jay then takes Lloyd to Sensei while Cole, Kai and Zane discuss his punishment. Later, Sensei reads Lloyd a bed time story about why you should never trust a snake and Lloyd then falls asleep. The ninja are confused and ask Sensei about it and Sensei reveals the answer to the riddle is: "To make them your friend".
5 : Can of worms
Lloyd Garmadon plays tricks on the ninja by order of Sensei Wu to teach the ninja about the destructive power of rumours. Zane's outfit is mixed in with Kai's when washing them and is turned pink as one of the tricks. Sensei tells them one of the reasons he told Lloyd to do this was because he couldn't find his lesson book, Kai later finds the lesson book in Lloyd's pocket. Nya then tells them the location of the Constrictai and Venomari tombs. They then split up into two teams, Kai with Jay to find the Venomari Tomb and Zane with Cole to find the Constrictai Tomb to stop Pythor P. Chumsworth from releasing. However they are too late and Cole and Zane fall under attack by Skalidor. They escape and head to help Kai and Jay who had been attacked by Pythor and the Venomari. They are then saved by Samurai X who uses gas to knock them out so they don't know the identity of the samurai. The ninja then head to Ninjago city to stop the tribes uniting. They then use the power of rumours to their advantage to stop the tribes uniting but are all captured except Zane because of his pink outfit blending in with a poster on the wall. Zane then frees the others but is pursued by Pythor, Skales, and the other Serpentine. Zane then uses his Shurikens of Ice to freeze the floors, and then everyone gets on his snowmobile, and they escape, while Pythor and other Serpentine are slipping on the icy floor that Zane created. Lloyd Garmadon makes Zane's clothes white again to make up for making them pink in the first place. Also, he says sorry to Cole by giving him a can of nuts, but Cole says there are snakes inside. He then opens the refrigerator and when he opened it, snakes pop out and everyone laughs, including Cole.
6 : the snake king
Pythor and Skales are found digging in the desert looking for a lost city known as "Ouroborus". Pythor finds a switch while digging and, when when the switch is activated, the lost city emerges from the sand. Meanwhile, the ninja receive a package with their ZX outfits. They are then told by Nya that Serpentine have invaded Mega Monster Amusement Park. By the time they are there, they find the serpentine tied up. They are told by the park's guests that a mysterious samurai came and saved the park. Sensei Wu tell the ninja to not be jealous of the samurai, but to instead be inspired by him. The ninja decide that whoever finds out the identity of the samurai shall become the Green Ninja. They each attempt to capture the samurai but fail. While Kai is baby-sitting Lloyd, he leaves him at an arcade so he can look for the samurai. Lloyd notices Skales talking to the other Serpentine about Ouroborus and offering them a ride there on a Serpentine Bus, and Lloyd sneaks on the bus, having disguised himself as a Hypnobrai. The bus takes them to Ouroborus, where Pythor challenges to fight the generals for there allegiance. Skales secretly gives Pythor the flute to charm the Serpentine in return to be Pythor's second-in-command. With the flute, Pythor forces the generals to give up there staffs. He then becomes leader of the snake tribes. Then, Lloyd drops the maracas that he was holding and the Serpentine find out he was Lloyd, leading to his immediate imprisonment. Back at the Destiny's Bounty, Sensei Wu asks about Lloyd and, when the ninja respond that they have not seen him, they get sent out to find him. The ninja find Lloyd's tracks and the lost city of "Ouroborous" that they led to. They try to make a sneak attack to rescue the boy but get captured, get their golden weapons taken away, and are forced to fight Samurai X. After a long time of fighting, they start to work together to get out of there. The ninja grab onto the mech suit and fly off to safety while Samurai X gets in a fight with the Serpentine and then later flies off to safety too, with the golden weapons. While in the sky, Samurai X's rocket boots shut down and he hits the ground. Meanwhile, the mech suit also shuts down and the ninja hit the ground, Kai being separated by the rest of the group. Kai sees Samurai X fall to the ground and goes to help, but finds out that he was Nya. Nya begs Kai not to reveal her identity, which Kai agrees to. Nya gives Kai the golden weapons and he goes to find the rest of the group, which he does. They go to the Destiny, though they returned without Lloyd, which made Sensei Wu upset. Nya then goes to her room to put her costume away and drops a weapon of her's in the process, which is picked up by Sensei Wu. Wu then says "Iron sharpens iron, sibling sharpens sibling".
7 : tick tock
The Ninja wonder and ask Sensei if they have reached their full potential. Sensei tells them a story of Garmadon when they were both young. He explains how the Great Devourer's venom made him evil. He goes on a trip to find Garmadon. Meanwhile the Serpentine ask Pythor P. Chumsworth where the four fang blades are and he struggles to find them. Then in Jamonicai village Zane finds the falcon and the ninja follow it. Zane first encounters a robot that tries to attack him. After defeating him he finds a workshop and discovers that he is and the falcon are robots . The ninja leave and are attacked by Treehorns and they struggle to win and discover the robot was made to fight treehorns and mistook Zane for one. Zane decides to fight and unlocks his full potential to fight the Treehorn Queen. Then Pythor discovers to get the map. He needs the antivenom in the staffs on paper to make the map. While Sensei Wu buys some tea and pours it in a fire and a portal opens. Sensei Wu goes in the portal, wakes up and Garmadon with four arms says "Hello brother, what took you so long?” and laughs.
8 : Once bitten, twice shy
The episode begins with Nya explaining to the ninjas another means for Fangpyre anti venom and after this, Jay asks her out on a date. Jay accidentally touches the fangs of the Fangpyre skeleton. The Serpentine try to get the first fang blade at the Mega Monster Amusement Park. They can sneak and not grab any attention because people think they are other people in costumes. When Sensei Wu talked to Lord Garmadon, he attacked him. Garmadon summoned mud monsters. But when Wu told Garmadon about Lloyd, Garmadon pulled him out, and they went on a journey to the Mountain of Madness to get back to Ninjago. While on the date Jay noticed that he is turning into a snake, but doesn't want to tell Nya. Meanwhile, the ninja fought the Serpentine. Zane accidentally froze themselves. When Nya walked away, Jay got beaten up by the people in the restaurant and then found a way to sneak out. Nya attempted to use the Samurai Mech but the busted engines provide a problem. The Serpentine caught up to her and tie her to a roller coaster with a flaming hoop and a broken track. Jay came to the rescue to stop them and save Nya, in the process, unlocking his full potential.
9 : the royal Blacksmiths
The Serpentine arrive at an ancient temple to find a fang blade. They use Lloyd to get past the traps, promising his freedom but then Lloyd finds that it isn't there and ask if he's going to be freed but Pythor says no. While the Ninjas discuss where are the other fang blades Cole shows one is in the form of a trophy. The ninjas pay a visit to his father and try to win the talent show so they can get the fang blade. Pythor disguises himself as a judge and then the ninjas win but Pythor steals the cup from them and gets two bytars to trap Cole and Lou.Cole reaches his full potential to rescue his father. Meanwhile Sensei Wu and Lord Garmadon go through the mountain of madness and fight Craglings and make it back to Ninjago.
10 : The green ninja
The episode starts with three of the ninja, Zane, Cole and Jay, training very late at night, while Kai dresses up as the Green Ninja. After the other ninjas sneak in and embarrass Kai, they get a message from Nya that Sensei Wu has returned. They met him and explain what has happened within the last few days, or the last three episodes. Behind him is Lord Garmadon, who surprises the ninjas because he has four arms. Kai and Lord Garmadon get locked in into a fight, which Sensei Wu breaks up. In the montage afterwards, the heroes are increasingly upset about his erratic (mainly evil-related) behavior, especially Kai. Kai hears Wu and Nya talk about the Green Ninja. He then gets in another fight with Garmadon, though more of a shove-fight. The ninjas find out that the third Fang Blade, and the Serpentine, and Lloyd Garmadon are in the fire temple. Kai runs out and catches Garmadon with the Four Golden Weapons (which proves Garmadon's plan worked) and gets into another fight. Kai wins this one, but gets scolded by Sensei Wu. The heroes get inside the fire temple, they see the snake looking for the Fang Blade. A snake next to Pythor finds and gives it to him. He looks in the blade and sees the ninjas. In this episode, Pythor gets the Fangpyre fang blade and Kai unlocks his full potential. Lloyd is saved in this episode and (at the end) has is revealed to be the Green Ninja, the one who will defeat the Dark Lord. (His Father)
11 : All of nothing
The episode begins with Spitta running down an alley and getting cornered by the four ninjas. He gives the ninjas lots of information on Pythor's whereabouts then he gets scared and tells them to stop them from unleashing the Great Devourer and is let free. Back on the Destiny's Bounty, Lloyd tells them they should steal the three other fang blades before Phytor gets the last one, then they find the tomb where the Serpentine are trying to get the fang blade. Before leaving, Sensei Wu instructs the ninjas on ways to avoid a snake's powers, such as Kai using Spinjizu with his eyes closed v.s. a Hypnobrai, or Zane connecting to the falcon against a Venomari. Also, Nya made a modification to the Samurai Mech to include a seat for Wu. The 4 ninjas, Nya and Wu leave Lloyd and Lord Garmadon behind to look after the HQ for them. In the tomb, they find a hidden door to the top of the Serpentine's inner sanctum. At Destiny's Bounty, Lloyd catches his dad trying to find the Ninjas secrets and tells him to leave, and they get a call from Nya. Meanwhile, the group is found and a fight begin, the ninjas using the tricks they learned earlier. However, they fall into a trap and end up in a large cage. Pythor then appears with the fourth and final fang blade, the Venomari blade. Lloyd gets ready to leave the ship in his Green Ninja suit, giving a message to Nya but failing to get a weapon. In the sanctum, Pythor is about to leave for Ouroborus, but the rest of the Serpentine want to celebrate with a Slither Pit tournament, which he agrees to. Kai escapes the cage in an attempt to free the others, but gets re-caught by Pythor. Lloyd breaks in, but trips on a rock and comically falls into the snakes' crowd and all of the Snakes laugh at him. Lord Garmadon appears with the skeleton army to save the ninjas, Pythor is shocked and tells him he betrayed them and Samukai long ago. A fight between 2011 and 2012 antagonists results in the heroes escaping with their possessions all 4 fang blades at once. During the fight Pythor tries to take the 4 fang blades and run off with them but he bumps into Lord Garmadon and Cole and they take the Fang Blades away from him. Pythor then turns invisable and the Ninjas go back to Destiny's Bounty. Afterwards, Lord Garmadon leaves the heroes and says good bye to his son before vanishing. Upset, Lloyd walks into a party the rest of the ninja made to celebrate having all of the fang blades. Unbeknownst to the ninjas, Pythor is outside their very window, about to strike for all of the fang blades.
12 : the rise of great devourer
Pythor gets ready to steal the Fang Blades to unleash The Great Devourer. Part of this is him tying Lloyd to some training equipment, keeping him quiet. Sensei looks into the spirit fog and sees him and the ninjas fighting the Serpentine, but the The Great Devourer is freed anyway. This foreshadows the events of the entire episode. Sensei gathers the ninja to throw the Fang Blades into a volcano to destroy them (however, the Fang Blades could have survived this anyway, the Fangpyre one did in The Green Ninja). Pythor makes his move and messes up the controls of the ship, sending Sensei overboard. Wu is caught by the ninja, but the event distracts them while Pythor gathers the Fang Blades. Before leaving, Pythor is attacked by Nya (as the Samurai) and Lloyd (as the Green Ninja). Pythor jumps off, onto the Rattlecopter and meets with the other snakes. The snakes hijack a tour bus to drive towards Ouroborus. The ninja race towards it and get into a big fight. The ninja board the snake bus and fight off the snakes guarding it, led by Skales. Cole uses his Tread Assault to knock Skales out of a window, into the desert. As a result all minion snakes flee, leaving only Pythor. Sensei goes after Pythor and fights him. This (and the ninjago mailman cycling by) causes the bus to crash right in front of Ouroborus. Pythor slithers in and places the fang blades into the Great Devourer's statue, awakening the beast. The statue collapses right in front of him. He finds out that the Devourer was under him, not the statue, the whole time, larger than any statue or drawing of it. The Great Devourer exits its prison, ever hungry. Pythor is dragged by Sensei Wu in front of the Devourer and were together the reptile's first course.
13 : the day of great devourer
Pythor and Sensei Wu have just been the appetizer of The Great Devourer's mighty buffet after it has finally been released. The ninja are forced to run with the giant reptile on their heels. The ninja flee to the Destiny's Bounty and are forced to leave their home behind after the Great Devourer caught it. Left with nothing but their weapons (and the Samurai Mech) the ninja head to the junkyard owned by Jay's parents. While Jay's parents weren't there, the ninjas used the junk and the Tornado of Creation to make the Ultra Sonic Raider. The Devourer (probably attracted to the large amount of things it could eat) appears and gets into a huge fight with the Sonic Raider, destroying it. Zane is caught in the attack and has the left side of his "skin" messed up, part of his "nindroid" face showing. The giant monster scurries to Ninjago City, the capital of Ninjago. The Great Devourer goes through the forest where the Fangpyre tomb is located in his path to the city. The Serpentine, who are all gathered at the Fangpyre tomb, jump into the tomb to avoid being squashed and they shut the lid, trapping them in the tomb. The ninja protect the citizens and people celebrating some kind of anti-snake holiday (Including Lou, Ed Walker and Edna Walker). The four-headed dragon saves the ninja after they almost get eaten. The dragon and the snake fight, but the snake wins once again. Garmadon shows up and asks for the four golden weapons. The seven (Kai, Jay, Cole, Zane, Nya, Lloyd and Garmadon) formulate a plan. The ninja take turns "running from it," using its large size against it. Going according to plan, the Devourer ends up stuck with its tail in it's mouth. Garmadon jumps off of a skyscraper with the four weapons and destroy The Great Devourer for good. Though Pythor, Garmadon and the Four Golden Weapons are nowhere to be found, the ninjas find Sensei Wu, still alive.