Their love - it's forbidden. They are forbidden. By who? Their very own parents. Yonghwa; the richest kid in school. Seohyun; the kid who got into the school by a music scholarship. They were like two different worlds, but surprisingly, they're in love.

It's a promise that Seohyun made to herself for 10 years. She kept up with it, going overseas for 10 years.. Just for him. Going through every possible method to train herself.. Just to become a beauty. For him. And when she finally meets him after 10 years, she caught his eye, just like what she swore to herself.