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

The Underworld tests Arin and Sora's commitment to Ras, while Nya and Jay work together to expose Lee's secret.

Heavily outnumbered, the Ninja race to stop the Forbidden Five from freeing Thunderfang. Wyldfyre desperately tries to cure one of the crew.

In the City of Temples, the Ninja find guidance from an unlikely source, while Cole, Kai and Frak battle the Hollow Ones in Imperium.

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.

Cole, Frak and Kai unearth a shocking discovery outside the Land of Lost Things, while the Ninja reunite to liberate Lee.

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.

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.

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.

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.

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.

Arrakore the djinn transports Sora, Nya and Riyu to New Djinjago. Ras enlists Arin in his plan to reverse the Merge.

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.

A mysterious mercenary attacks Ras and Arin in the World Forest. Zane and P.I.X.A.L. try a new approach in their search for the Prismatic Blades.

The search for Arin — who continues his training with Ras — leads the Ninja into a dangerous confrontation with a ferocious cyclops.

Sora's pie-baking failure gives Zane an idea for how to find Arin, and the crew frees a village from a giant puppet's reign of terror on the way.

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

ThunderFang gathers the last of his power in the Spectral Lands and only the Ninja can stop him - but at what cost?