Determined to give the Insomniacs a night of good dreams, Izzie and friends bring them to the Candy Realm. However, no place is safe from the Nightmare King.

The Dream Chasers arrive at Castle Nocturnia hoping to find the key to defeating the Nightmare King, but the castle won't reveal its secrets easily.

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