If you were suddenly to be paired up again with your ex-lover whom you haven’t seen nor talked to for years, how will you deal with it?   A romance that started from being two high schoolers that has polar opposite attitude to two adults that had their ways separated after finishing college.   Sana was the typical one that has a bigger dream. Coming from a broken family, she only has herself and her grandmother. Of course, life is not as easy as it looks like, and

Nayeon and Mina were college sweethearts. Things didn't go as they have planned and so their relationship ended. 8 years later, they were back in each other's arms. Destiny you would say? But, both were already married... not with each other.

Chaeyoung dances with Mina, once the clock hits 12 midnight. Everything fades, even memory does, but your ghost still remains. Let me go, or should I be the one to let you go?

Sana is an aspiring singer who always sings for Dahyun. The latter started catching feelings for the former, but they can't happen. Mainly because Sana is working her relationship with Jeongyeon and Dahyun has always been the bestfriend.

Sana left Dahyun. She left her physically and emotionally, without leaving the latter any option or even a promise to hold on to. When everything seems like going well, it ended without it even starting.