Lena, a princess from 1905, propels through time to 2018, where she uses her dance skills to pass as another student at the Paris Opera Ballet School.
As Lena attempts to blend into modern life at the school, Henri races to find a way to bring her back to 1905 before the Time Collectors catch her.
Victor rescues Lena from a tricky situation before leaving to deal with the Time Collectors. Meanwhile, Henri comes up with a plan of his own.
Struggling to keep up with her classmates, stay in sync with her dance partner and fit in at school, Lena confides in a new friend.
Lena asks Jeff to take her around Paris to learn more about the modern world, but she loses track of time and risks breaking an important school rule.
While Max prepares for a high-stakes audition, Lena and Thea's rivalry comes to the fore as they fiercely compete for a mentor role.
Tensions arise as Lena, Max and Thea work on a tricky scene study. Henri and Oscar build a machine that attracts the Time Collectors' attention.
Confused by Max's behavior, Lena follows him to his aunt's restaurant, where their budding friendship comes under close inspection.
Ines and Lena's friendship is put to the test when the latter unexpectedly bonds with Thea. Max struggles with a dance, but Jeff won't let him quit.
As the class prepares for the midseason show auditions, Lena struggles to get Jeff to take them seriously. Thea's mother pays an unwelcome visit.
Landing in 2018, Henri races to find Lena before the Time Collectors can. But Lena and her classmates are trapped beneath the opera house.
Lena's nerves get the better of her during rehearsals. When she and Max are made to be understudies, he decides to teach her his "chill method."
Just as she is about to go onstage for the midseason show, Lena receives an important letter, forcing her to make a difficult choice.
Lena faces the consequences of her actions as Madame Carré disciplines her, but her friends try their best to change the headmistress's mind.
After being benched, Lena resorts to rehearsing on her own, but she finds comfort in an unexpected form of communication with Henri.
Max invites Lena to work with him on a flash mob dance, but a last-minute hiccup prevents her from joining in. Henri struggles to reply to Lena.
Lena's revenge plan goes a little too well. Having been left out of a project, Dash auditions for a school in London.
At an underground dance competition, the Blok must improvise when a rival group steals their choreography.
A famous choreographer comes on board for the end-of-year show, but unlike the other students, Max seems unimpressed by his arrival.
As family secrets spill out, Lena tries to distract an angry Max by taking him to teach dance at the youth center.
Following her moment with Max, Lena speaks with Thea, who appears to be fine. But behind Lena's back, she sends Henri a revealing letter.
On a school outing to a museum, Lena is stunned to discover a portrait of her mother wearing a familiar pendant. Does it have time-travel powers?
While most students impatiently wait to find out their roles for the end-of-year gala, some are distracted by other matters.
The Blok qualifies for a major European dance competition, but the dancers are unsure whether they can handle it alongside gala preparations.
As the students secretly prepare for both the gala and the Euro Challenge, Armando's last-minute changes threaten to disrupt their plans.
An overwhelmed Lena prepares for her final dance at the Garnier and gets ready to meet Henri, all while avoiding the Time Collectors.