Song Ahreum is an orphan that dreams of working in one of the big 3 companies in entertainment, YG ent and lady luck seems to be shining on her as she was accepted to be an employee there. However, the tables turned when after a few weeks working in the office department, YG called her in and offered her a promotion; which is to take care of nine boys. It gets more worse as the time goes by as she might have accidentally made enemies with two of the members in the group. But what if.. the hate turns into romance?