The main character has been having strange dreams, seeing strange things, and meeting strange people. He investigates these events and finds a strange girl named Aya.

In Japan, there is a disturbing rumor being spread that people's shadows are ripping from their bodies, never to be seen again. For one young man, the frightening nature of this rumor is just beginning to manifest in the form of a nightmarish world that he can't seem to escape from.

In this place full of dark minions and demons, he and his friends fight futilely against unknown enemies, only to be brought back to the "real world" as quickly as they left it. Is this real, or a dream? Only one person holds the key to destroying and saving the world as he knows it...