Ending of Act 1 occurs after Shay and Vella's stories are finished.
Ending of Act 1 (Please add more to help)Edit
SPOILERS!! SPOILERS!! SPOILERS!!
After finishing both Vella and Shay's stories, a cutscene will begin. Vella wakes up on the beach after defeating Mog Chothera, only to discover that Mog Chothra is Shay's Ship, as Shay stumbles out of it. In a fit of rage, Vella tries to fight Shay, but falls into Mog Chothera. Just as she does so, Mog's Mouth closes leaving Vella in Shay's World, and Shay in Vella's.