Dipper and Mabel are twins, sure, yeah. But there's one thing that seperates them , Mabel doesn't even care to look at ger brother, she's popular and has not so good grades, everyone considers her 'perfect' While Dipper Pines is like a shadow of his sister, he gets bullied to the point where he had just stayed mute, for the summer they went to Gravity Falls, unexplained things happens and a certain dorito was the one to blame.