In The Eye

Gravity Falls is a place of diversity. It's a town with goblins, ghouls, unicorns, humans, and a fabled multi-bear. Everyone knows this. But nothing could prepare them for the All Seeing Eye, a god, hell bent on one thing, and one thing only.
Revenge.
Dipper's just a young adventurer who wants to explore, thrive, and make it to his 17th birthday alive. The world seems to have a different plan, however, when his twin sister, Mabel, falls ill soon after taking the Mark. In desperation, Dipper makes a deal that he soon may come to regret...