Lim Jugyeong, a middle schooler, uses makeup to improve her appearance after enduring bullying due to her looks. She develops a range of skills, from applying BB cream and eyeliner to using mascara and colored contacts. With her new look, Jugyeong becomes a high-class beauty, admired by her classmates, but she must keep her true appearance a secret. When Lee Suho transfers into her school, the situation becomes complicated, as he's the only one to see Jugyeong without makeup.