Hakyeon and Dayoung are childhood friends but things change and people always say boys and girls can't be friends without developing feelings for one another.

Ki Mari was in an accident years ago, an accident in which she lost not only her father but her eyesight. The Doctor's said it was temporary but it seemed as if Mari wouldn't be getting it back anytime soon because of all the stress she's been under. Can Mari put the past behind her in order to see again? - - - -

Inha and Junhyuk fell in love Inha's sophomore year and Junhyuk's junior year. Years pass, things change, one of them falls out of love. Junhyuk begins to cheat, Inha finds out, yet they don't break-up. Inha is naive and stays with him, thinking he'll eventually come back to her.