Aino is a female detective with a tragic past; she was once a hostage in a series of sexual assault cases, and her lover, a fellow detective, died in the line of duty while rescuing her. One day, a hostess in Roppongi is murdered, and upon seeing the crime scene, Aino is certain it is the work of the same sexual assailant from her past. Determined to find clues to arrest the culprit, she is prepared to sacrifice herself. The lonely battle of a female detective begins... [Special Appearance: Tsubasa Ayumi]