Park Soyeong is an ardent admirer of musical theater who enjoys finding beauty in each new rendition of a play, relishing in the dazzling voices and show-stopping acting. Although she is not a fan of dramas, she gives one a try, only to be completely starstruck once the lead actress takes the stage. With short hair and enchanting eyes, Jang Jaeyi completely captures Soyeong's heart and leaves her unable to look away.

Soyeong easily becomes Jaeyi's number one fan, requesting an autograph after every one of her performances. The two women soon become friends through their mutual love for theater. But when Jaeyi lands a role in a new play alongside a celebrity actress with whom she shares a past, Soyeong starts to wonder if her jealousy is merely that of a fan.