13: Halloween Spectacular of Spooky Doom!

On Halloween, Dib experiences horrible nightmare visions. He used his dad's equipment for his "parascience" as Professor Membrane calls it. Each reality jump gets progressively longer. When Dib makes his final jump, he drags Zim into it as well. Now they're both stuck. They're both haunted by Nightmare Bitters and a bunch of her nightmare minions. Zim drills a hole into Dib's head in the end and gets back to reality where GIR is hunting kids down for their candy. Zim breaks his skeleton and Dib makes it back to Earth. Nightmare Bitters follows, but is frightened by the disguised and mutilated kids. Zim will destroy Dib as soon as his skeleton stops being broken.

Thank you to Invader A-Bomb for submitting this guide!