In a crime of passion, Yuji Kizaki chokes his girlfriend to death. Following this incident, Kiyose, a writer for a gossip magazine, and his boss, Takatsuki, decide to interview Yuji's ex-girlfriend. During the interview, Mariko starts discussing the events of the murder, events only the killer could know, which unsettles the reporters. Two days later, Kiyose is informed of Mariko's death. Sometimes an incident experienced by those who are vulnerable and appear innocent, creates a butterfly effect that triggers that can tip the balance between life and death!