Ninjago: Masters of Spinjitzu: Season 12 Episode 15

The Temple of Madness

Jay must stand alone against Unagami in the end-game, after Nya loses all her lives, yet Unagami has a bigger battle in facing the truth about his own identity. Jay discovers that Unagami is actually the game and not Milton Dyer. Unagami uses the energy cube from Nya to complete the Manifestation Gate, and travels through it. Jay follows after him.