Chinese-Korean student, Jung Soo Hee, moves to Seoul in hope of forgetting her past life in New York and in hope to start a new one; this time, trouble free. But when life suddenly throws Kim Jongin, otherwise known as Kai; the typical player of the school, into her life, she gets the exact opposite. When she tries to throw him out, it only makes him cling onto her tighter.

And with each day that he holds on, he gets closer to finding out about the one thing Soo Hee had tried so hard to forget;

herself.