Yemin accepted her ex-boyfriend’s good friend Siwon until one day Kyuhyun came back. And things didn’t turned out what it was supposed to be. A love triangle unrevils.

Cho Kyuhyun: A caring and loving 22 years old guy who loves and protects Yemin a lot. Good friend of Siwon.

Choi Siwon: A gentleman and caring 22 years old guy who stands by Yemin's side and loves her not expecting anything in return. He was the boyfriend of Yemin after Kyuhyun. Good friend of Kyuhyun.

Heo Yemin: An ordinary sweet 20 years old university student who got involved with 2 guys; Kyuhyun and Siwon whom change her life entirely. Her first love was Kyuhyun.