
The game begins with the main character, Omori, waking up in WHITE SPACE, a small room where he has lived "for as long as he can remember." Crossing the only door there, he enters the world of HEADSPACE, where his friends Aubrey, Kel, Hero, Basil and his older sister, Mari, are. At a picnic they begin to relive various memories together through Basil's photo album, who ends up inviting them to visit his house. Once there, Basil discovers a strange photo that makes him panic. Immediately, Omori is teleported to WHITE SPACE alone, this time without the door to exit, so his only option is to use a knife to stab himself, revealing that the previous events were part of a dream of a teenage boy named Sunny.