What if you're a K-Pop Superstar and you're Bias is your Biggest Fan? (Exchanging Life with My Bias) "How much do you care for me?" "I care for you because i'm your biggest...."

You're a biggest fan of a girl group, and you love you're stanned group, but one day, you're life will change into something unbelievable...something you cannot believe of. YOU EXCHANGE LIFE AND BODY WITH YOUR GIRL IDOL! What would you gonna do? Enjoying the life of an idol? or enjoying to be a fan? THE STORY STARTS...