Thomas has to live with the void left by Alice, Luc redecorates for Marie-Ève, ​and Florence surprises her parents.

Simon imposes his love at first sight on Jean-Pascal, and Valère teaches Thomas the art of naughty correspondence.

Marie-Ève ​​doesn't like the look of those around her on her man, and Virginie is furious with that of her boomer parents.

Thomas reunites with his babysitter, Marco has a strange attraction to Italy, and Valère leaves a strange impression on her partner.

Simon, intoxicated, has the flash of the century. A death could harm Luc's dream, and Virginie wonders how to get rid of a body.

Marco and Virginie have to endure the heaviness of a cuckold friend, Thomas becomes the subject of an experiment, and Lydia steals a thief.

Antoine questions Lydia's commitment, Marco's confidence is damaged by his daughter, and Thomas questions himself.

Thomas falls back into an old, almost forgotten trap, and Jean-Pascal anticipates erectile dysfunction linked to a language disorder.

JP and Simon move forward in their process to become dads, and Thomas becomes an adult. Marco and Virginie return to adolescence.