Hong Yeo Joo is the writer of a popular internet novel about a gumiho. After Yeo Joo witnesses nail salon owner Alex saving a woman from an assault at the subway station, she is convinced that he is the perfect hero for her story. The shop "Paris" only hires male nail artists. To get more material for her story, Yeo Joo is determined to work at the nail shop and disguise herself as a flower boy with help from her friend Ji Soo.