Jung Eun-Ji is a very lovely, sweet and caring girl. She always puts everyone first. Even though her  parents are not that rich ,they work really hard to send their lovely daughter to the most expensive school in Seoul. Even though she is only 21, she is very mature girl who is very responsible and everything that she does makes people fall in love with her. She her best friend (who is also her crush) two years ago when he just left without a word. She wanted to start afresh with her life in Seoul.

Yoon Doo-Joon is typical guy (25 years old). Everything about him is perfect- every girl wants him and even boys. He had to leave everything behind just for him to be an idol. He made a really hard decision to leave his best friend whom he grew up with. People think that he is a cold hearted person but the reality is that he is someone who is very lonely. Even though he goes to the most expensive school in Seoul and he is the leader of the boy band Beast, he always has a lot in him mind.

What will be the fate of the two old friends be when they learn that they are going to the same school. Are they going to build again their friendship or not or is it going to be more than friendship???