Jennie Kim known as "Flirty Girl" in their school, she flirts those people have an innocent mind. It was all started when her boyfriend broke up with her. She thinks that her ex boyfriend can't hurt her because she knew this person is so nice, kind and wise. She couldn't imagine that he can do to flirts other girls even he knew that he's in a relationship. That's why Jennie is disgusted to those people she thinks who act like an innocent. Then suddenly Lisa Manoban transffered to a new school, where Jennie's studying, Lisa is a quiet person, she was always wearing serious face. You can't see her smiling even just a little bit, but there are two person can only make her smile. Rosé and Bambam her Childhood Bestfriends. The two are met because they have the same course & year, and they are classmates. Then Jennie suddenly had an interest to her, because of her attitude. She want to flirts Lisa, because Lisa is her new target. But what if one day, she found out about Lisa's past? What she will do? Can she continue her plan? Or not.