They say if a person is truly meant to be with you, no matter how many times you've let them go, you will always find a way to fall back together. 

Senior high hottie Changmin can get any girl he likes but no matter how many girls he's been with, he can't forget that one girl from middle school, Sunhwa.

Sunhwa comes back to Seoul and meets Changmin again. She's done everything to forget him, but seeing him  made it difficult to keep gliding on.

They're both frustratingly still into one another but circumstances are very different now than they were before they fell apart years ago.