In order to bring a drug organization to justice, Detective Seo Leehwa, began his undercover investigation. His first objective? To approach the boss, Cha Taegeon. Everything up until this was moving along smoothly. However, after finding out Leehwa’s true identity, Taegeon takes advantage of the situation to make Leehwa sleep with him. If that wasn't enough, Taegeon threatens to kill Leehwa’s family if he were to attempt to flee… Still, even though he knows Leehwa’s a cop, Taegeon’s going to just let it go? Does he plan to use Leehwa as a plaything? That doesn’t make any sense. “ You fucking asshole, what do you want from me..? “ Seo Leehwa. Do you know how I recognized you?” “ What?” “ …it’s because I have never forgotten, not for a single moment, what you said ten years ago.” A memory of ten years ago resurfaces. A twisted bond, one that’s just pure hell, reignites.