The Dream Chasers rush to crack the code to reveal Lunia's secrets; the Nightmare King presses a full-scale assault on Castle Nocturnia.

The Nightmare King begins to open a rift to the Waking World; Mateo presses Oz for the truth about Lunia's battle with the Nightmare King.

A night terror is on the hunt at the fall festival, and so is the Night Hunter, who appears in the Waking World with a brand-new threat for Mateo.