Mabel and Dipper Pines come home from one exhausting summer break, and they expect the school year to be a break FROM the break. But everything changes when they get letters from a certain owl. Dipper and Mabel Pines are wizards, and both are summoned to Hogwarts. But only one arrives. The big question is, what happened to the other twin?

The Pines twins have been steeped in mayhem, mysteries, and magic every summer since they were 12 years old. Coming back home to Piedmont, going to high school, acting normal? All those things make them stick out like a sore thumb. When you ask outsiders about the Pines twins, you get a mix of strange stories and casual observations.