Quite a few years have passed since the last Weirdmageddon, and Bill was finally trapped in the statue. Stan and Ford made up and went on a water trip, Melody and Soos had a baby and Soos finally became the new owner of the Shack. Dipper and Wendy were about to get married, and Mabel also had a boyfriend and of course she was a bridesmaid at the wedding. A month before that, a strong earthquake happened in Gravity Falls, it was unknown to anyone what it was but it caused the Bill statue to break and free him. He knew about their upcoming wedding but waited until his strength was gained and then he came, in the midst of the wedding on Saturday at the moment of their vows, the ground between them suddenly cracked and the newlyweds almost fell. Ford stood up from his chair in horror and looked around. A painfully familiar figure was hovering above the sky, Bill was hanging over them in his figure and looking at Dipper with disapproval.

Bill: Have you forgotten "OUR" vows, pine tree?