With a handsome face and manners that would put a diplomat to shame, new hire Hyeonu Lee is a sight for sore eyes to Senior Manager Iyeon Shin when he walks through the doors of Hanshin Worldwide. Feeling like she's won the lottery, Iyeon is looking forward to her company life alongside this polite and hard-working young man—"Hey, Iyeon. Get this done by tomorrow." Hyeonu is no regular employee; he's the son of the CEO. And as he begins to show his true nasty nature behind closed doors, Iyeon begins wondering what she did to deserve him.