When 18 year old Lee Jooyeon signed a contract to be part of a band called "After School", she expected it to be the bomb. But turns out shes only the backup singer, and doesn't get as much fame as the other band members. So she takes it into her own hands, to get herself more recognized by her fans, by joining a charity foundation, where she will be paired up with another Kpop singer to do a duet. Hoping to get paired with an extremely famous and good singer to boost her popularity , she joins the ride.But little does she know that she's in for a surprise when she finds out who her partner will be.