The day when Lena, a princess living in 1905, discovers that her parents want to take her out of the Opéra de Paris school to bring her back to Russia, she decides to run away with her boyfriend Henri. But just as they’re about to go, she finds herself propelled through time, and lands in Paris in 2018. Barely given any time to cope, Lena must lean on her classical training to keep her secret and pass as a student of the dance school.