“Do you see that girl over there?” the mother pointed to the young lady standing on the platform. Her once smooth, silky black hair had lost its luster. The mother would’ve been envious of the girl’s pale and unblemished skin, yet now it was a sickly yellow. But even more so, the mother would have been envious of the splendid silks that hung over her bodice. Such luxuries were beyond the proletariat’s wildest dreams.

Geeky girl Bae Joohyun (Irene-Redvelvet) may seem clueless, but has a strange gift for understanding fan-girls. So what happens when arrogant super star sehun  encounters her then requests her secret service which she eventually accepts? Can she keep her new job a secret from her class mates?