Jin Ju has a passion for dancing that is infinite. She is in a four member girl group called 2NE1. She has a crush on her sunbae, Lay, and tries to impress him every day. To impress him even further, she teaches amateurs who want to be professionals. One of the little amateurs is Xi Luhan. Little did she know, he is her new "angelic" neighbor. What will happen to the three of them? Who will be the lonely one; who will be the happy ones living in para