Things take a huge turn when Cheon-Sa, a talented high school girl whose motto is to be as normal as possible, is noticed by the school's most popular guy, the idol Min-Jun who's looking to be in a dating show where he must date a normal girl for a year, but she has a crush on someone else. Her brother, Jin, is in a K-Pop group that's about to become a sensation. One of her best friends, Jung-Ho, happens to be her twin, whose relation with her still remains a secret. Will Cheon-Sa ever be able to live a normal life again?