Le jour de la nouvelle prof de SVT

Jules has brought an electronic cigarette to impress Yasmine, who pretends to play along. He invites Noa to try it out together. They soon learn that smoking and vaping are not as impressive as they think.

A new maths teacher replaces Samir. His authoritarian methods don't please everyone, starting with Albert, who takes action.

Kayla is full of hurtful jokes when Franck asks her to take part in the improv. What if, like many teenagers, Kayla is masking a problem of self-esteem?

To prevent Yasmine from kissing him on Valentine's Day, Dorian pushes Hippo to say he doesn't know whether he prefers girls or boys... but nothing goes according to plan.

Hippo can't find his phone. Because of his parents' new financial situation, he's determined to find the culprit... and his phone. He twists reality by spreading false news about a wave of thefts at the school.

The school basketball team is preparing for an important match, but Lou and the Pom Pom Girls are abandoning their position because of Maxime's misogynistic jokes. Dorian, their choreographer, has the idea of creating a team of Pom Pom Boys.

Operation clean-up! The students collect garbage on the beach. Dorian takes care of the most polluting, while Hippo is only interested in winning and wants the heaviest.

Albert convinces Hippo to do odd jobs so he doesn't have to rely on his parents. Kayla takes advantage of the situation to pay Hippo to do thankless, demeaning jobs.

Kayla and Lou compete to see who can steal the most objects. It's Anaïs' birthday. Everyone has forgotten and she mistakenly thinks they've planned a surprise birthday for her.

Someone is posting pictures of Mathis and Hippo in ridiculous outfits all over the place. They're the laughing stock of the whole school and don't understand what they've done to deserve this.

In physical education class, Dorian is never chosen by captains Youcef and Maxime. But when they need a partner for a presentation, they are the first to ask for him.

Co-education (mixing boys and girls) in middle school is a thing of the past! Some students appreciate this initiative, others think it's a terrible step backwards.

It's vaccination day for the papillomavirus (HPV), a sexually transmitted infection. Out of fear of the shot, Mathis joins the anti-vaccine movement Kayla started after seeing a conspiracy video on the net.

The students are stressing about the brevet blanc, an exam practice, scheduled for this afternoon. Everyone tries to deal with their stress in their own way, but Noa's anxiety infects the whole class.

Amina is still trying to outdo Lou's outfit, but it's a failure. In her competition, Amina discovers that the new fashion is “new vintage”.