Synopsis: Even the Trash Was Originally New

Lieutenant Seo Yi-hwa goes undercover to catch a drug cartel, and her first goal is to get close to the boss, Cha Tae-gun.So far, things are going well, but when Tae-gun realizes who she is, he demands that she join him.He even threatens to kill her family if she runs away. ...You're going to let him go when you know he's a cop? You're going to use him as a puppet? That doesn't make sense. "You bas****, what do you want from me...!""Xu Yihua. How do you think I recognized you?""What?" "...I've never forgotten what you said to me ten years ago."Memories of ten years ago flashed through my mind.A hellish feud resurfaces.+