As a result of the successful crackdown on the gangsters, "Jitae" is in crisis due to "Taehun". Along with his collection of money, all his sex partners are caught by the prosecution.. Jitae, who is left alone, is driven by a desire for revenge and sends numerous letters containing sexual harassment to Taehun, who is suffering from work disruptions. Eventually, in a fit of rage, Taehun confirms the sender of the letters and discovers that it is his high school classmate, "Lee Jitae"?!