One day, female college student Ari Sonoda encounters a murder scene in a back alley. And in the next moment, Ari loses her mind for some reason. When Ari wakes her up, she finds herself tied up in handcuffs and imprisoned in a room she doesn't know. And Ari notices one strange thing, she has amnesia... Furthermore, a strange man appears in front of her. "It is said that it is good to give a stimulus to memory loss." Revealing his true identity as a detective, the man who smiled eerily was a psychopath who had a mad love for Airi. And the psychopath detective's pleasure blame begins... Drowning in the pleasure torture of a psychopathic detective-- Once you're caught, you can't escape.