Love means Kim Rowoon for a girl named Song Yoonjoo. She doesn't see any man except Rowoon. She would sacrifices anything to get him and doesn't even care about the fact that she will get hurt if she loves him more. But it is different from the other side,Rowoon feels annoy by Yoonjoo's behaviour. He already has a girlfriend and he loves her so much that nobody can replace her in his heart. What will Yoonjoo do to get rid of the girl from Rowoon's heart ? And will Rowoon learn to accept Yoonjoo in his life ?