Released after being wrongfully convicted and imprisoned for 13 years, a woman begins executing her elaborate plan of retribution.
Deliveryman Jong-su is out on a job when he runs into Hae-mi, a girl who once lived in his neighborhood. She asks if he'd mind looking after her cat while she's away on a trip to Africa. On her return, she introduces to Jong-su an enigmatic young man named Ben, who she met during her trip. One day Ben tells Jong-su about his most unusual hobby.
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.
