Nichkhun is a boy who just moved to Korea. While in Korea he went to Seoul Elementary School. Nichkhun is so popular at school, all girls love and adore him. Nichkhun at the school only had one friend that is Taecyeon. Although so many girls who love it or worship him, Nichkhun was not interested in anyone. Until one day Nichkhun met with Yuri. He saw Yuri was crying because of the disturbing by the boys. Nichkhun and Taecyeon help. Taecyeon beat boys, while Nichkhun helping to calm Yuri. But Yuri rejected in aid by Nichkhun. Because Yuri hates all the boys at her school. But Nichkhun did not give up and keep calm Yuri. Yuri finally trust him and accept his help. After the incident Yuri, Nichkhun and Taecyeon became good friends. And that's when Nichkhun starting to like Yuri, Yuri also loved it. Nichkhun so make an appointment with Yuri will always be together. But Nichkhun can not keep it their promise just because Nichkhun must return to Thailand to see her father who was seriously ill. Whether that will happen? Whether their love will come back? Or Nichkhun will just forget about Yuri?