Myung is a girl who's so much into the "looks" of the boys, despite the fact that she is only 11 years old. Yu-Da is the boy who's the center of all the girls of their class, but Myung doesn't really understand why. One day, Myung and Yu-Da get's into a fight, and they agree to meet at the back of the school to settle things down. However, Yu-Da never shows up...and from that day, it seems like nobody remembers the existance of Yu-Da, except for Myung. After 5 years, Myung bumps into Yu-Da at her new high school... Despite all these years while she tried not to forget about him, she finds out that Yu-Da does not remember her at all!