"My task wasn't killing people; it wasn't like my job was anything better. I might as well just get my hands on a person and stab them, if I could get over it later on in my life..."

Heejin works as a medical intern in the day, and is forced to become a bartender at night by her boss, the city's leading mafia. Tables turn for the mafia, though, as Heejin's new target comes into the story.