You're an 18 year old daughter of a rather rich family but lives alone as an ordinary girl in a luxurious apartment. You're also a big fan of a boy group, Bangtan Boys and the next thing you know, they move in next door. They plan to stay for about a year as vacation and in the meantime, many things happen between you and the boys... Friendship.. Happiness.. Joy.. Fun.. Love. Hatred.. Depression.. Sorrow.. Misery.. Rejection.