After being challenged to a video game battle by Robbie, Dipper is shocked when his favorite playable fighter, Rumble McSkirmish, comes to life to defend him. But Dipper soon loses control over Rumble McSkirmish and has to find a way to stop him.

Soos needs a date for his cousin Reggie's engagement party and looks to a dating simulator game to help him talk to girls.

Bill has returned to take down the Pines family. But this time he has brought some of his friends with him.

Ford discovers Bill’s true motives and a final confrontation with Bill leads to the Pines family’s ultimate fate and greatest sacrifice.