Freedom State (2006) is a short independent narrative film written and directed by Cullen Hoback.
A woman named Krystal, unhappy with her husband and her life, checks into a small rural "mental health home".
The resident mental patients discover that Nurse Garrett, the facility supervisor, has absconded and conclude that the apocalypse (rapture) has occurred and the world has ended.
Led by Krystal, who has been voted "President", most of the patients embark upon a whimsical school bus road trip, variously understood as a "quest" or a search for survivors or for the "end of the world".
In the end, they all return to the home where Dax (Krystal's love interest) has decided he will not "check out" of the facility after all.