Something attacks Dipper one night during a mystery hunt with Mabel and stuff starts to happen to him.

A Gravity Falls Alternate Universe created by Caty This takes place next summer, when the twins, Mabel and Dipper return to Gravity Falls. The Stan twins are back from sailing around the globe and Soos still runs the shack. Mystery Twins, Mabel and Dipper Pines come across a strange flowing stone in a lake whilst mystery hunting. Mabel picks it up and bring gs it back to the shack without her brother knowing......... but, doing that is what causes her, her brother and the towns downfall.

Dipper is a werewolf! And no one else knows, not even Mabel. Now he's having trouble keeping his pack together while making sure no one can know about what he really is. sorry, bad at descriptions plz read