Sun-woo, a suspended police detective, is very good at catching adulterers, so he started a sideline, specializing in catching adulterers. Three days after his deputy job, he took over a new case. Unexpectedly, what awaited him were two bodies at the scene of incest, and the only witness was the wife of one of the dead, Soo-jin. [Not Just a New Movie] Sun-woo was instantly trapped in despair and inexplicably became a murder suspect. In order to find out the truth, clear the name, and find the real murderer, Sun-woo struggled, but the situation deteriorated further. On the other hand, Sun-woo also developed a dangerous and ambiguous relationship with the beautiful and charming Soo-jin, which made him go deeper and deeper into the maze...