Mary is the daughter of a dancer. After the death of her parents, she has been working as a maid at the Domenico Totland family. Domenico and her two daughters, Brie and Britt, treated Mary badly.
Heartthrob Joey Parker launches a massive dance competition. The news made the girls in Beveria excited. At a masquerade party, a mysterious girl with excellent dancing skills made Joey "one dance" with her dance talent, but she did not rush away at 12 midnight, leaving only a music player. In the process of Joey trying to find the girl, countless impostors swarmed, and when the real protagonist Marie () plucked up the courage to walk up to Joey, Joey took the girl as an impostor. Joey didn't know that Mary was his mysterious girl until Mary released that song. The two were very happy together and danced together, but Mary's sisters were jealous of her and used some means to cause misunderstanding between Mary and Joey. Mary started Dodging Joey made Joey very puzzled and sad. With the help of his friends, Mary went to the dance competition held by Joey. Joey invited Mary to dance on the stage at the end of the competition, but Mary did not respond. The audience shouted Mary's Name, Mary entered the competition at the end, won the championship, and also won the opportunity to enter the university.
