Song Hyejin is a university student having four months left before she finishes her program. She has a supporting best friend, good study results and a good relation with her parents. The problem? She has no idea what she wants to do with her life and she starts to question whether this is who she wants to be. As if that wasn't enough, she runs into Zhang Yixing, a Chinese exchange student with faulting Korean language skills who turns her life completely upside down.

After accidentally meeting on the restaurant, Kyungsoo and Kai decides to go on a first date, something that instead of that classic dinner and cinema turns out a little different from what Kyungsoo maybe had expected. But what can he say? It's Kai.