While waiting for her friends on the street one day, university freshman and band music enthusiast Do Ahyeon reunites with former high school classmate Lee Haerang, who's now... the vocalist of a band? Having only hung out with Haerang once during high school to see a live show together, Ahyeon still has some unanswered questions about him... Why did he drop out of school after the show? How did he end up in a band? But most importantly, what does he think of her?