Seung Ji, who has been through a lot in an illegal organization rife is stabbed in the back by the boss... and joins a new smuggling organization as the youngest in order to hide.
Yeong Won, who grew up alone, meets her aunt by chance and who runs an illegal organization . She comes down from Seoul to Busan to manage a smuggling office full of thugs.
Seung Ji assists Yeong Won, who seems naive and awkward, and only looks for an opportunity to make a killing and run away. Seung Ji does not trust anyone and believes that in order to avoid being deceived, you have to deceive first. Yeong Won swears that she will never betray someone she loves. These two women, who have never been loved, gradually become defenseless against each other.