People always say past is past move on. But what if we can't move on from the past? 

Choi sulli is a smart, beautiful, kind and rich girl from busan. She has a boyfriend named choi minho. Choi minho a rich, athletic handsome soccer player from konkuk university has a best friend named kris a handsome basketball player from china moved at konkuk. Time passed by kris became a soldier he was then married to sulli.