Masashi moves in with the family of a gangster, whose violent activities mask a kind personality. But soon a murderous ex-con comes to town.

In 2020, the Tokyo Olympics have been cancelled due to the Olympic Minister’s corruption, and there was a failed poison gas attack by a new religion. In the shadows of these two major events, the brutal killing of a convenience store owner occurs. The incident is dubbed “Icarus.” Sana, who had contact with the owner’s son, Shiro, becomes the subject of interrogation by detectives. Suffering from dissociative identity disorder, she and the other personalities inside her each begin to recall events from their point of view.