When Kim Taewun sneaks onto a film set to find his twin sister - an avid fan and fansite master of idol-turned-actor Lee Hae-seo - he ends up running right into the star himself. The problem? Hae-seo just happens to be in the middle of an uncontrollable rut cycle. In a whirlwind of chaos, Taewoon helps him through it, only to bolt like Cinderella at midnight. Now, with no idea who his mysterious savior was, Hae-seo takes to social media to track him down… and Taewun’s quiet life is about to get very, very noisy.