Han Jisung and Hwang Hyunjin,these two are those type of duos where they are famous and nerds at the same time But a lot of people liked them One day Jisung is looking through his locker and find a letter,a love letter to be corrected And after this day he started getting these letters almost everyday,one day he got curious who is his secret admirer and asked his best friend to help him,but at the end they always got the same person Hwang Hyunjin himself