Beatrice is left out in the rain with a brainless horse while Wirt and Greg must ask for directions in a lively colonial tavern called “The Dark Lantern” where some…

Wirt, Greg, and Beatrice get all mixed up in the musical antics of a schoolhouse of animals, a lovelorn teacher, a grouchy old benefactor, and an escaped gorilla.

A new threat leads Mabel to venture into the enchanted realm of the unicorns. Meanwhile, Dipper learns an unexpected twist about the enigmatic Bill Cipher.