Summary of the story
The protagonist, Mouse, indulges in a vivid daydream wherein psychopaths are capable of experiencing remorse and guilt for their actions. The narrative centers around Go Moo-chi (played by Lee Hee-joon), who embarks on a mission to apprehend a psychopathic serial killer. This pursuit is driven by his personal experience of witnessing a harrowing incident during his childhood, which has left him grappling with inner demons stemming from the trauma. Assisted by his younger partner, Jeong Ba-reum (played by Lee Seung-gi), Go Moo-chi endeavors to uncover the truth behind psychopathic behaviors. Additionally, the story delves into the exploration of whether there exist any genetic predispositions towards psychopathy and contemplates the potential implications of such knowledge if it were to be utilized for detection purposes.