Another Gravity Falls fantastic about Wendy and her friends finding a spirit board in Wendy's attic. They decided to play with the board to see what would happen. When they asked a few questions, the board said really bad things towards Wendy. When all of a sudden a demon takes over Wendy, making her have a thirst for blood. When Dipper and Ford find out about it, they try to think of a way to set Wendy free. Now they must find a way to stop the demon before it's too late.
9 parts