While stranded in the jungle during a massive storm, Claire and Simon unknowingly stumble upon a clue to the whereabouts of the treasure sought by Sinjin.
Cole joins Jay and Zane inside the Nindroid to solve a mysterious puzzle and also Kai enters Zane's mind and suggests the Ninja take a break from puzzle-solving to figure out which villain is trying to hack their friend.
Zane's search for Arin leads to an old friend but lands him in the middle of the Forbidden Five's hunt for the Prismatic Blades.
Arin ventures into a dangerous new land to heal Ras while Nya and Kai come up with a plan to make Jay come to them.
Laval and Li'Ella's relationship grows as he gives her a tour of the Lion City. But distracted, he misses a key battle against the Hunters. Tormak joins the fight and saves the day. But the Lion King Lagravis is captured and brought to the Ice Fort. Who will lead the Lions now?!?
A terrified hybrid dinosaur rampages through the park, causing chaos and creating cover for Danny and Sinjin as they try to steal the Nedry videotape.
Cragger tricks Laval into withholding CHI from the Crocodile tribe. This reignites the hostilities between the Lions and Crocodiles. Laval must frantically escape the wrath of the Crocs and somehow get rid of the CHI before his father finds out.
When Jestro attacks a village on the far side of the Kingdom, the NEXO-Knights wonder how they'll get there. Then Macy remembers her dad has a royal RV…maybe they can “mod” that for their own, “knightly” use? Now the NEXO-Knights get rolling…in THE FORTREX, their own ROLLING CASTLE! This great new HQ, which houses Merlok 2.0 as an operating system, will be how the knights move around Knighton and protect it from Jestro and his monsters. Speaking of the evil jester, in this episode Jestro uses some newly-made monsters to attack a town far from the capitol where he thinks he's safe from the Knights' reach. We see two parallel stories here: the Knights training, learning more about digital magic and getting organized as a team and at the same time we see Jestro making monsters, trying to learn how his powers work and talking to the Book. In the end, the Knights roll up in their castle and defeat Jestro and his marauding monsters. Lance thinks he should be the leader because he's a snot. “Of course I'm the leader…I'm a Richmond.”
The Avengers prepare for a party with a surprise guest when Ultron crashes the preparations by using mind control on Iron Man. While trying to rescue their leader, the rest of the team discovers that Baron Stucker, HYDRA, and Yellowjacket are in on Ultron's plans. While preparing for a party at Avengers' Tower, THE AVENGERS (IRON MAN, CAPTAIN AMERICA, BLACK WIDOW, HAWKEYE, THOR, HULK and VISION) notice Iron Man acting strangely. When Iron Man volunteers to go out and get more ice, they find it odd: when has Tony every volunteered to get anything? Suddenly, ULTRON appears on a screen: he's taken control of Iron Man! To make matters worse, Ultron takes over all the versions of Iron Man's armor and they fly off! Finally, the Avengers confront Ultron and his Ultron Minions as they attack Avengers' Tower. Ultron's ultimate plan: use all the data/stuff they've stolen to free the newly rebuilt IRON LEGION, destroy the Avengers, and control the world. Tony dons the hastily repaired Hulk Buster Armor and it's on! It's a huge battle as the Avengers try to save their beloved HQ and defeat Ultron. Will they succeed? And, more importantly, can their party be saved after Ultron tries to take down their Tower?The Avengers must now fight one of their own, and they're not sure what to do! Cap and Thor lead the charge, but can't fend off Iron Man and Ultron's Minions. Meanwhile, Black Widow, Hawkeye and Hulk track down a signal that seems to be controlling Iron Man from a castle in the “Little Sokovia” section of New York. There they fight HYDRA and BARON VON STRUCKER and learn that YELLOWJACKET is the “bug” that infected Iron Man's suit for Ultron. To help break Iron Man free from Ultron's control, the Avengers call in their own bug...ANT MAN!
Lloyd, having been kicked out of the Hynobrai snake tribe unlocks a second tribe – The Fangpyres – to help him regain control. The Ninja are busy setting up their new HQ that Zane discovered, but are called to duty when the Fangpyres attack the village where Jay's family lives.
Feeling out of her comfort zone and overwhelmed by Olly's obsession with fame, Paisley turns to Zac for help with something completely unrelated: dancing.
Practicing for the local snow lodge's big snowboard race, Mia has an accident and hurts her ankle. She insists it's no biggie, but when she tries to resume practice, the normally fearless Mia finds she's now terrified of snowboarding! At the local snow lodge's Snowboard Meet, ace snowboarder Mia, trying to raise money for a new Heartlake City animal shelter, enters the fiercest race of all – the Boardercross. Then, while practicing, she has an accident and hurts her ankle. She insists it's no big deal, but once she heals and tries to resume practice, the usually fearless Mia finds she's now terrified of snowboarding! With the help of her Friends, she tries hard to overcome her fear, but her nightmarish visions of snowboard monsters and jeering snowmen have her shaking in her bed. She backs out of the race, disappointing her Friends and herself. Finally, when an avalanche traps Fiona, Mia is forced to overcome her fears and race to the rescue.
Owen and Claire must rescue a theme-park reviewer from a sabotaged aerialtram - and a salivating T-Rex.
Laval the Lion and Cragger the Crocodile are the best of friends. But when young Cragger becomes king of the Crocodiles, he tries to conquer all of the CHI. Former friends become worst enemies.
When Jestro the Jester finds the Book of Monsters, chaos breaks loose in the Kingdom of Knighton. Can the newly graduated Knights from the Knights' Academy save the kingdom? It's final graduation fighting exams for the latest Knights from Knights' Academy. All our new Knights demonstrate their prowess: CLAY, AARON, AXL and LANCE. PRINCESS MACY get to join them, but her father doesn't want her to graduate. As part of the entertainment, MERLOK does an amazing magic trick. His act is followed by…JESTRO, the King's Jester. He's terrible (and he should know to never follow a better act.) Everyone laughed because he's a real joke....a total failure. While Jestro roams the halls fo the King's Castle, forlorn, he hears the BOOK OF MONSTERS calling to him from Merlok's library. The book talks Jestro into gathering as many books of spells as he can carry, but they're interrupted by...Clay! As Jestro quickly pages through the Book of Monsters to attack Clay, Merlok arrives. There's a battle in the library between Jestro and Merlok. Finally, the wizard summons up his most powerful spell in self-defence. BOOM! There's a big, magical explosion and when Clay forces his way back into the library, Merlok, Jestro and the magic books are...GONE!
Spider-Man and Marvel's Super Heroes take on a mischievous Loki and a team of super villains in an all-new LEGO adventure
The four Ninja are snapped out of their post-hero complacency when Lord Garmadon's young son Lloyd shows up and tries to pick up where his father left off. The Ninja dismiss him as a threat, but regret that choice after Lloyd wakes up the evil snake tribe. A prophecy is revealed that states a green ninja will ultimately defeat Lord Garmadon.
Olly is feeling the intense pressure of their newfound fame, and it's starting to take a toll on him. He's caught up in the glamour and the spotlight, but it's beginning to cloud his judgment and affect his relationships with his friends.
The disappearance of the Murky Realm causes a daytime incursion at school, and the team must use creative methods to send dangerous sirens back to the dream world.
After losing their memories, the dream chasers set out to find someone responsible for their predicament