A girl name Yoona lives with her family at Busan. But due to her father's work they need to move to Seoul because her father is being posted there. However, she does not know she'll be a neighbour to three famous boys. At the same time, Yoona will be at the same school with them. The three boys wanted to be closed with yoona cause she seems very kind and pretty girl. One of the boy started to like Yoona. But there's a boy in his school likes Yoona and he will do anything to get her. Can they solve this problem or they can't?