Ok Chan Mi is a 19-year-old high school student. She used to be a shooter for a high school team. One day, Ok Chan Mi's twin brother dies. She chases after the truth related to his death. She gets involved with Ji Soo Heon. On behalf of bullied students, Ji Soo Heon takes revenge on their tormentors.
In the near future, a financial crisis hit Korea and slums arise. From those areas, in a hopeless city, Jun Seok, who was released from prison, plans a dangerous operation for a new life with his family-like friends, Jang Ho, Ki Hoon, and Sang Soo. However, the expectations for the future are short-lived, and an unidentified pursuer appears and begins to chase them, seeking their lives. Can your friends who are each other's whole world get away from his hunting?