Chapter 1

Mabel desperately need a date to the upcoming dance. Bill desperately needs access to the Pines' mindscapes. That's when Bill takes a human form and takes Mabel to the dance, thinking he'll get access in return.

Dipper is convinced that Mabel is dating Bill. When supernatural beings begin showing up in their hometown, Dipper is sure that Bill attracted them.

And everything goes downhill when Mabel finds out who her new boyfriend really is, and what he really wants.