Dipper: The Apprentice

This is the story where Dipper Pines decides to take Ford's offer in the end and become his apprentice, solving mysteries and uncovering the truths of the world. But as a result, he and Mabel become separated. Years later they reunite but an accident happens. Mabel becomes trapped in another world and it is Dippers job to save her. Follow Dipper as he journeys through different worlds to find his sister, save her, and bring her home. Oh. And you'll be interested to find out what these worlds are. Guess. By the way, I own nothing but the socks on my feet so don't think I own Gravity Falls. Also these socks are a rental so nevermind. I own nothing.