Ninja never quit! Nya, Kai and Zane give the battle against Imperium new hope while Lloyd uncovers a mystery hidden deep below the city.

In the Spectral Lands, Ras sends Arin to retrieve a healing elixir from the Well of the Lost. Kai hatches an ingenious plan to find Jay.

In the Land of Lost Things, Nya runs into an old pal while Sora looks for an alternate power source to ward off a junkyard monster called "The Hoarder."

When the Bounty airship returns with no captain, Arin, Sora and Lloyd use clues to figure out what happened to Kai. Is it a trap... or something worse?

Kai makes a discovery that allows him to speak with his sister. Arin visits the Temple City museum where he has a breakthrough about the missing horns.

To save Cloud Kingdom, the Ninja must work together to send a terrifying tentacled beast back where it came from and close the Mergequake — and fast!

When the Ninja meet their match in a Photac — an indestructible techno-beast — Sora believes that a mission to Imperium is the only way to destroy it.

The Ninja begin their training to defeat the Forbidden Five, but Wyldfyre feels left behind. Bonzle reveals an unexpected connection.

Lloyd and Arin arrive in the Administration, where they learn the Dragon Core will be demolished if they don't act fast — and file the correct paperwork.

Lloyd attracts the attention of a powerful adversary. The intervention of the mysterious mercenary tips the balance in an epic battle.

When the Ninja split up to find the three Dragon Cores, Arin and Lloyd take the airship but soon need help from a village of peaceful algae farmers.

Empress Beatrix's rampage pushes the MergeQuakes dangerously close to the tipping point, unless the Ninja can work together — and save the world.

Ras leads Arin and Sora into unexpected chaos in Mysterium while the Ninja recruit Jay for a special mission.

The reunited Ninja learn of the Forbidden Five's dangerous quest to find the Prismatic Blades. Meanwhile, Ras leads Arin across a desert.

Sora hacks into the Imperium logs to find Riyu. Nya and Kai explore a mysterious passageway. Lloyd leads an epic battle against an army of Photacs.

To bust the imprisoned dragons out of Imperium, the Ninja will need to work hard, think fast and find one big exit! Unless the Photacs get there first.

In Imperium, Arin mentors a group of eager young crimefighters. Sora confronts a villain from her past. Lloyd frees an Elemental Master from prison.

Master Wu sets out to discipline the Ninja — through dance! Arin reunites with Frak, who Sora doesn’t trust, and the fighting gets underway.

Mr. Frohicky and Zane head to the Crossroads to locate a Wyconium coil. Elsewhere, Wyldfyre's pranks complicate her and Kai's Dragon Core quest.

Arin and Sora develop new powers that just might help them confront the dragon hunters. Can the Green Ninja teach them how to harness their abilities?

To meet the legendary teacher from Lloyd's visions, the Ninja must pass a series of tests. But will the ancient master live up to their expectations?

Having infiltrated The Administration, Jay, Kai, and Nya attempt a dangerous escape, while Lloyd grapples with the meaning behind his spiritual trial.

Sora and Frak hunt the Elemental Monster aboard the Explorer's Club ship, while Lloyd faces a crucial ritual at the Temple of the Green Ninja.

After the portal gates separate the Ninja across the Merged Lands without their powers, they frantically search for a safe route back to Ninjago.

In Umbrasilvis, Sora, Frak, and Wyldfyre form a plan to prove their innocence, while the Whispering Wood rapidly fades the longer Lloyd's ritual goes on.

Lloyd begins to grasp his true purpose, while Kai, Nya, and Jay desperately look for a way out when they discover they're trapped in a giant creature.

Jay retraces his steps to try and unlock his memories. Frak asks his father and the Explorer's Club for help getting the team home.

Imperium comes under attack from the Loyalists and the Elemental Monster army. Meanwhile, Lloyd must find a way to save the Whispering Wood.

Cole overhears crucial details about the Loyalists' deadly plan, and Lloyd comes face-to-face with his greatest enemy in the Temple of the Green Ninja.

Sorceress searches the storehouse for a spell to rescue Bonzle while Arin intercepts a special package. Then, the remaining Ninja infiltrate the ritual.

Bonzle and her team set out to search for a certain sorceress, but first they'll need a map. Meanwhile, Arin struggles with his Spinjitzu training.

Sora, Frak, and Wyldfyre race to save Riyu from a deadly poisoning. Meanwhile, an old friend arrives to help Lloyd and the team battle Elemental Monsters.

The Ninja reach the Caves of Bells while Lloyd and Arin fight their way through the Spectral Lands to summon the Arc Dragon.

Lloyd, Jay, Nya and Wyldfyre go undercover in the strange Land of Lee, while Riyu's training under Rontu is off to a bumpy start.

Sora and Nya search for the Dragon Core with a magical compass. Arin and Lloyd get put to the test in Mother Garden. Wyldfyre and Kai play keep-away.

The Ninja escape Lee and head for the source of the threat, while Ras plans his next move.

The Ninja embark on their separate journeys to awaken the Arc Dragon of Focus but deal with unexpected - and annoying - interruptions.

The Ninja catch up with Arin in the World Forest and try to convince him to leave Ras, and the reason for Arin and Sora's deep bond is revealed.

Zane's run-in with looters at a strange monastery leads to a reunion with an old friend, but he also crosses paths with one of the Forbidden Five.

With Mysterium under attack, Ras, Arin and Sora rely on the Sorceress for help, while Jay leads the Ninja to the Administration on their way to Lee.

Nya's Seeker Stones lead her and Sora to something they weren't searching for. As Zane's Assistant Keeper, Mr. Frohicky can't do anything right.

The Ninja get a big surprise when they arrive at the Tournament of the Sources, while Kai and Bonzle contend with the Forbidden Five in the Nether-Space.