Hyeon-jeong's sister is missing and she fears for the worst. Via her sister's cellphone, Hyeon-jeong learns that her sister stayed in a countryside vaillage. She goes to the village to find her sister and stops at the local police station for help. Because of the little evidence she has, the police refuse to offer help.
A quiet, professional killer, Hyun-jun, arrives at a house to kill a man in his sleep, only to discover a woman alone under the sheets. Jin-young has decided to kill herself after a traumatic break up with her lover of seven years, but she wants to go out with a bang, not with a miserable and lonely dose of commonplace sleeping pills. The most extraordinary love story begins.
Two police stations from neighboring precincts are in constant fierce competition with each other, including for the Officer of the Year award. But then a high-profile case forces them to work together.
