While the Crystal king rises, so do two nindroids that everyone had forgotten about. Mr. E and Cryptor end up alive after years of just... nothing. A little after being revived, they start hearing about the Crystal king. Unfortunately things don't go to plan. The two go through many emotions when they see what's happened while they've been gone; Bitterness, betrayal, and jealousy.
Bringers of doom, darkness, and destruction descend upon NINJAGO, and all hope seems lost. The ninjas (Lloyd, Kai, Cole, Zane, Nya, Jay and Morro) must fight off the Oni invasion - but how can they defeat this destructive power and protect the NINJAGO legacy? There isn't much time left - is this the end of NINJAGO, or will good defeat the powers of evil once again?