The peaceful summer of Jamel, a womaniser, changes dramaticaly as he finds out his ex is getting married.

On election night in 1981, celebrations spill out onto the street and there is an air of hope and change throughout Paris. But for Elisabeth, her marriage is coming to an end and she will now have to support herself and her two teenage children. She finds work at a late-night radio show and encounters a troubled teenager named Talulah whom she invites into her home.

Yuri, 16, has lived all his life in Gagarin Towers, a vast red-brick housing project on the outskirts of Paris. He dreams of becoming an astronaut. When plans to demolish Gagarin Towers leak out, Yuri joins the resistance. With his friends Diana and Houssam, he embarks on a mission to save their home, which has become his “starship.”

Victor, Cyprien and Guillaume have known each other since high school. One day, Victor tells them some news that will put their friendship to the test.