Flailing at life, Lee Tang panics after he kills a man after work. Soon, Jang Nan-gam is on the case — discovering a disturbing truth about the victim.

A mysterious woman approaches Tang, claiming to know his secret and begins to blackmail him. The weight of his actions starts taking a mental toll.

Nan-gam struggles to find clear answers as he investigates the latest deaths. After connecting with an enigmatic figure, Tang decides to turn himself in.

Nan-gam comes face to face with Chon, who recognizes him from the past. As Bin and Tang plan their final escape, Bin receives a menacing phone call.