After he loses the Mask of Deception to a new villain, Lloyd reunites the scattered ninjas.

Lloyd befriends the spirited Princess Harumi, but an explosive attack by the Sons of Garmadon results in another relic lost and her parents missing.

The ninjas seek the Sons of Garmadon by interrogating a captured gang member and going undercover at a karaoke bar.

Zane is taken to the Sons of Garmadon's secret base, where he learns about their unseen leader. Meanwhile, Lloyd discovers the gang's true purpose.

Zane and Mr. E meet in an epic face-off as the ninjas' ship embarks on a rocky journey to find the third Oni mask.

Separated by the crash, the ninjas try to get to the Oni mask before the Sons of Garmadon.

A flashback reveals the truth about the Quiet One's identity as Harumi and Lloyd venture deeper into the Oni Temple seeking the third mask.

Lloyd awakens a prisoner of the Quiet One, who plans to resurrect Lord Garmadon with another hostage.

The ninjas celebrate at Laughy's until they learn Garmadon has broken Harumi out of prison.

Mystake heals Lloyd's injuries but his survival comes with a heavy price. Garmadon conjures up a destructive giant to display his powers.

Lloyd hides from the occupying forces of Emperor Garmadon and Harumi, while Young Wu and the ninjas are marooned in the Realm of Oni and Dragon.

Iron Baron banishes Jay, Kai and Zane to doom in an arena against a dragon. In Ninjago, Lloyd assembles a rebel group of Elemental Fighters.

The ninjas are caged and used as bait to lure a dragon. Lloyd and his resistance fighters hijack a TV station to broadcast a message of hope.

The enslaved ninjas gather materials so that Cole and Wu can build a dragon decoy. The Sons of Garmadon strike back at Lloyd's rebels.

Lloyd and some of the resistance fighters are on the brink of capture in Nya's vehicle. In the Realm of Oni and Dragon, the ninjas and Wu go on the run.

Mystake reveals her true nature and past, while Wu leads the search for Firstbourne.

Wu's identity is revealed while Lloyd and his comrades come up with a new plan involving Harumi.

When Wu is captured and electro-shocked, his memories suddenly return. Lloyd uses stolen powers to try and seize the Oni Titan.

An angry Garmadon looks to regain control while Wu and Iron Baron land in Firstbourne's nest.

The ninjas return to Ninjago and head to battle just as a terrible attack is underway while Master Wu and Lloyd confront Lord Garmadon.

While investigating a heist, the ninjas discover a legendary unreleased arcade game that suddenly takes control of all the other games in Ninjago.

When the ninjas connect Jay's disappearance to Prime Empire, they head to Dyer Island to seek answers from the game's designer, the elusive Milton Dyer.

Cyrus Borg discovers a shocking secret about Prime Empire, while the ninja battle an escaped Mechanic in their attempt to reach Level Thirteen.

Now inside the Prime Empire game, the ninjas find themselves in unfamiliar territory as they try to find Jay and evade an army of Red Visors.

Inside one of the game zones, a samurai named Okino faces a crisis of faith when he repeatedly fails to lead a series of masters to victory.

In order to stop Unagami, the ninjas must obtain three Key-tanas, the first of which is hidden in one of Prime Empire's most dangerous game environments.

While trying to cheer Okino up, the ninjas arrive at the Cliffs of Hysteria and must figure out how to climb them.

Still in the game zone Terra Karana, the samurai guide Okino has to chose between helping the ninjas or obeying the orders of his master, Unagami.

The ninjas learn that the only way to acquire the second Key-tana is by winning a race in Terra Technica — and must find racing cars in unexpected ways.

As the ninjas prepare for the brutal Speedway Five-Billion race, Lloyd meets a race driver named Seven — who may hold the key to victory.

Unagami's soldiers, the Red Visors, finally discover the secret location of Scott's garage — where they stage an attack against the ninjas.

The ninjas barely have time to mourn the loss of their fallen friends before being thrust into the chaos of Terra Domina.

Back in Ninjago City, Zane and Pixal hit the mean streets to track down Milton Dyer, only to discover that things are not what they seem.

Zane, kidnapped by the Mechanic, faces Unagami while Pixal questions Milton Dyer for information on how to shut down Prime Empire.

Jay must stand alone against Unagami in the end-game. But Unagami has a bigger battle in facing the truth about his own identity.

When Unagami breaks into the real world and terrorizes Ninjago, Jay, Zane and Pixal attempt to prevent disaster by reuniting him with his creator.

A group calling themselves the "New Ninja" tries to stop a vengestone smuggling mission while the ninjas attempt to deal with Nya's disappearance.

On a ship out at sea, a sailor falls into the water during a perilous storm. To the crew's surprise, he's quickly placed back on board.

The ninjas' investigation into the vengestone smuggling mission leads them to an abandoned subway line — where they run into the New Ninja.

The ninjas visit the mayor with an unusual appeal: to request the release of one of their worst enemies from Kryptarium Prison!

In a strange twist of fate, the ninjas successfully break Aspheera out of prison. But to save Nya, they'll also need to steal back Aspheera's staff.

As they wait in the monastery for the ninjas to return, Aspheera and Master Wu compete in a series of tests of strength and cunning.

After freeing Aspheera to save Nya, the ninjas land up in Kryptarium Prison, where they are surrounded by their old enemies.

Crystal spiders continue to recruit villains to join the council of the mysterious Crystal King. Nya is reminded of her days as Samurai X.

While the ninjas are tasked with prison labor in the desert, Nya and Dareth intercept the bus and help them escape.

After splitting up with the others, Zane, Kai and Dareth make their way through the desert and catch a ride with a girl who ran away from home.

The ninjas reunite at Twitchy's and try to figure out which villains have already joined the Crystal King's council — and who will be next.

The ninjas try to track an undercover Lloyd as a crystal spider leads him under Ninjago City — and straight to the council of the Crystal King.

Harumi tells the story of how she went from the princess of Ninjago to the leader of the council of villains.

Federal Marshal Hounddog McBrag knocks on Master Wu's door. Beneath Ninjago City, the ninjas search for Lloyd — who tries to reason with his captor.

The ninjas are trapped in an old subway car in a collapsed underground tunnel. Master Wu and gang defend the Weapons of Spinjitzu.

As Lloyd awakens to terrible news from Harumi, the ninjas wait underground for Nya and the gang to rescue them. But will help arrive in time?

The council of villains resurrects a powerful old foe. Lloyd watches in horror — and later, makes a daring escape attempt.

Master Wu and the ninjas plot a heist at the police impound lot to take back the Bounty. In Primeval's Eye, Lloyd and Harumi traverse the jungle.

The Overlord realizes that an attempt to destroy the ninjas could unleash their powers and thinks of a new plan. Lloyd and Master Wu chase a lead.

At the home of Vinny of NGTV News, Lloyd and Master Wu discover a most unexpected houseguest and listen to his curious tale.

As the ninjas battle the seemingly invincible Vengestone army, Master Wu and Lloyd outline a possible path to victory.

Pixal makes some modifications to the ninjas' vehicles, and they head out into battle. But the Overlord has been holding back.

As the battle against the Crystal King rages on, Nya is trapped beneath the rubble. The Paperkids spring into action to defend Ninjago City.

Lloyd saves Hounddog McBrag, Master Wu learns of an ancient prophecy and Pixal and a damaged Zane run into convicts who escaped from Kryptarium Prison.

Skylor helps Cole and Kai out of a tough spot. After running into Jake at the arcade, they all follow Master Wu's clues to the Paperkids hideout.

Kai attempts to define his relationship with Skylor... but his timing might be off. Dr. Borg tells Pixal that Zane is in a coma.

The ninjas split up to try and send distress signals to their allies. Lloyd wonders if Garmadon is capable of "complassion" after all.

Master Wu explains the Dragon form — but the ninjas don't have much time to figure it out after the Overlord learns their whereabouts.

Lloyd and Garmadon meet the Overlord in an epic showdown. The ninjas get help from their allies to defeat the Vengestone army — but it may be too late.

Thanks to the sacrifices made by his loved ones and fellow ninjas, Lloyd taps into a deep, ancient power to vanquish the Overlord.