A year has passed since Master Wu was lost in time. The Ninja are spread across Ninjago on active missions, but are prompted to regroup when a powerful relic is stolen.

Lloyd and Princess Harumi venture through the streets of Ninjago City, meanwhile Cole follows Hutchins into a secret chamber.

After escaping the Sons of Garmadon, Jay and Lloyd learn the tale of the Oni and the Dragon from Wu's old friend and tea shop owner, Mistaké.

Zane goes undercover as Snake Jaguar and must compete in a deadly bike initiation race.

The Ninja fly abroad the Bounty, where they discover that a transmission Zane intercepted may reveal the hidden location of the Sons of Garmadon's leader, the Quiet One.

As Lloyd and Harumi venture deep into Primeval's Eye in search of the third Oni Mask, the ninja attempt to fix the Bounty and make a starling discovery.

As Lloyd and Harumi search the Oni Temple for the last mask, the ninja are taken hostage and discover Princess Harumi's true intentions.

The Ninja appeal to the police commissioner of Ninjago in an effort to help save Lloyd and thwart Harumi.

Just when the Ninja think they have saved the day, Lord Garmadon returns to Ninjago, and frees Harumi, who encourages him to "achieve his True Potential" by conquering the one thing that has always stood in his way... his son, Lloyd.

The Ninja race to save Lloyd, as a more powerful-than-ever Lord Garmadon creates an enormous Colossi to help him rule Ninjago and defeat the ninja.