Yi Fan and Hyemi are childhood friends. They fell in love each other but to afraid to confess. One day, Yi Fan have to go to Canada with his family. 

Hyemi waitd for Yi Fan to return as he promised her. The days she waited for became years. Yi Fan did not even contact. She felt Yi Fan forgot her and she thinks that it is time that she have to move on.

But one day, Yi Fan came back to fullfill his the promised that he made with Hyemi. And here it goes....