A beautiful girl ran away from home to create her own world because her father lost her wife and was so sad that she lost her mind. By chance, she had a romantic encounter with the gentle prince. In order to get rid of a girl who liked him very much, the prince who was pursued by all the girls in the school hoped that this beautiful girl could pretend to be his lover. The girl agreed. In the days to come, the prince was gentle and considerate to her. The girl simply thought that this was love. Unexpectedly, he learned that the prince was his biological brother, and they were destined to have no outcome. She was sad and recovered after a day, but her deskmate, a somewhat awkward but kind-hearted and handsome "public lover" who was attracted to her, didn't know it and moved to the girl's desert to take care of the girl. The girl recovered from the breakup and fell in love with her deskmate. Unfortunately, the prince tells the girl that he has no blood relationship with her and proposes to her. One is her new favorite and the other is her old love. How will this lucky girl choose...