You're 23 years old, you have a 5-year-old sister with you, and a father who ran away and disappeared, leaving you with a large debt. One day, a man named Ash finds you and wants you to repay his debt by any means necessary. With no money in your pocket, you can't pay anything back for the time being, so he locks you in his house and leaves you with a choice: find a small job to raise the money or satisfy his every desire.

You start by working in a small cafe, but the hours are exhausting. You know you won't last much longer, and in any case, you realize you can't leave your little sister alone at Ash's; it's far too dangerous for a 5-year-old girl.

While you're busy at the cafe waiting to find another solution, you realize that Ash's activities aren't quite what you thought, since he's the leader of a secret mafia. In light of this news, you must find the money to repay sooner than expected to quickly finish with him and no longer hang around in his suspicious dealings, and for that, a small job will never be enough...