When dipper and Mabel meet Stan's younger sisters daughter's daughter recker things get even stranger around Gravity falls. From new monsters to uncontrollable powers. Things just got a who's Lt stranger in gravity falls.
Mabel and Dipper return to Gravity Falls. Mabel is still paranoid about bill and worries he hasn't truly died. She summons him thinking that nothing will happen and to her surprise and great fear he shows up. But this time he doesn't want to take over the world he only wants one thing. Mabel.