This is a story of two women who found each other in the dark underbelly of a criminal organization. Seungji has been a member of a crime syndicate where intrigue, betrayal, and violence are the norm. After getting double-crossed by her boss, she decides to lay low and joins an illegal trafficking gang as an underling. Yeongwon, who grew up mostly alone, has a chance encounter with an aunt who runs a criminal organization. The aunt sends Yeongwon to Busan, where she's tasked with managing an office full of low-lives working for the trafficking network. As Seungji helps out the innocent and somewhat dim-witted Yeongwon, she always looks for a chance to hit it big and run away from the gang. Seungji trusts no one. She believes she should cheat others first to avoid being taken advantage of. On the other hand, Yeongwon vows she'll never betray the person she falls in love with. The two women who had never been loved slowly fall for each other.