Aino is a female detective who was once a hostage in a series of female assault cases. At that time, there was a tragic past in which her lover, a colleague detective, died in the line of duty while rescuing Aino...One day, a hostess in Roppongi was murdered, and Aino saw the situation at the crime scene. I am convinced that this is the work of a woman who assaults women! A female detective who is willing to sacrifice herself in search of clues to arrest her criminal.