The film follows three patients of a mental asylum who misinterpret a passage from the Bible as a sign that the end of the world is imminent, and escape from the walls of the facility to find a place to picnic and watch the event.

The staff are blank-faced and abusive to Coco upon her arrival and attempt to take her favorite crow feather wrap, which she holds onto tightly.

The group later become increasingly more absorbed in the Bible that the priest gave them, and are especially interested in a passage describing the end of the world, misinterpreting the book's publishing date as the event's reference point.

In a residential area, Satoru reaches for a thrown-out trash bag and opens it looking for food, but is horrified to find a severed hand, and runs away from the other two.

They open their picnic basket, which is empty, and mimic the eating of food, before Tsumuji suggests that shooting the sun with the police officer's gun may trigger the event.

The film ends with the feathers from her wrap bursting into the air as Tsumuji grasps her body, clicking the now empty gun into the sky.