Jeon Mi-seon

A mother lives quietly with her son. One day, a girl is brutally killed, and the boy is charged with the murder. Now, it's his mother's mission to prove him innocent.

During the late 1980s, two detectives in rural South Korea attempt to solve a series of gruesome rape-and-murders of young women that leave the community terrified using limited resources and outdated methods. But when the murderer strikes several more times with the same pattern, the detectives realize that they are chasing the country's first documented serial killer. They then attempt to piece together the clues in this thriller based on true events.