After their breakup, Ahn Yujin, the star of SOPA’s volleyball team, found herself walking through all the places they've gone to before. Reminiscing all the memories Minjoo and she has created, she found herself still loving Minjoo even though all the things Minjoo has done to her. Little did she know, there's something Minjoo didn't tell her yet. Would she find out what Minju has been keeping from her or ending up being in pain and heartbreak for her whole life without knowing what actually happened?