Bang Yongguk is known to be a war freak, womanizer, and a troublemaker at his school. But even he's known to be a badman girls still admire him because of his irresistible charisma.
While there's Lee Hee Ra a top and model student in the same school. She's famous with boys because of her being kinda mysterious, and a certified genius. They think that she's really cool girl.
But one night while Bang Yongguk was on his usual routine of fooling around he discovered something interesting about their school's coolest good girl. That she's not as good just like what everyone thinks. And Bang Yongguk will use it to blackmail and manipulate Lee Hee Ra to become his slave.