Song Young-chang

This story is based on true events.

Song Woo-seok has no clients, connections, or a college degree, but his eye for business and appetite for money make him the most successful lawyer in town. But at the peak of his success, a local teenager is falsely accused of a crime, then beaten and tortured while waiting in jail. Shocked by these conditions, Song takes the case no one else will, and changes the course of his life.

An ex-special agent Cha Tae-shik's (Won Bin) only connection to the world is a little girl, So-mi (Kim Sae-ron), who lives next door. Her mother, Hyo-jeong, smuggles drugs from a drug trafficking organization and entrusts Tae-shik with the product, without letting him know. The traffickers eventually find out about her smuggling and kidnap both Hyo-jeong and So-mi. Tae-shik is now drawn back into the world in a frantic search for So-mi's whereabouts. In order to save So-mi, he makes an arrangement with the crime mob. While So-mi is still nowhere to be found, the police begin to chase after Tae

When a doctor learns a murderous secret from a sedated patient, he finds himself in an unsolved serial murder case. 
As dismembered bodies start showing up close to home, the doctor realizes he must solve the riddle before the killer discovers what he may know.