What exactly is happiness? A combination of circumstances? A simple sense of calmness? A fragile balance tipped by the littlest thing? Let's see…

Poor Vincent anguishes over who will direct his film. Claire gets a contract worthy of her talent. Marie and Jacques enviously follow others' success.

Routine is the worst. Does Marie want to be a notary for another 20 years? Does Jacques want to buy an apartment with Gilbert and stay there forever?

Heat wave. Marie and Simon spend the day at home. Jacques is visited by ghosts. Vincent realizes that his love life is based on movies.

Will Marie dare to resign? Vincent wonders if you can love two women at the same time. Claire wants to rewrite her articles, but Theo prevents her.

Vincent now wonders if you can love three women at once. On-camera testimonies give insight into this fascinating specimen of a "man in anguish."

Who am I? Where am I going? Marie, now unemployed and therefore without social status, wonders who she has become. Will she find herself?

Vincent and Ariane speed towards separation. Jacques and Gilbert prepare to live together. Claire faces success and possibly being apart from Theo.

Simon thought he could settle for less, but frustration and lack of challenge get to him. More ambitious than ever, he sets out to conquer the world.

Vincent no longer wants to direct his film. Will he continue to work with Ariane? Jacques doubts Gilbert's fidelity, worries about his mom's health.

Jacques reacts to Cecile's death by retreating into a type of silence. For everyone else, it's a bit like life stopping momentarily...

Simon, deep in money troubles, faces the challenge of his life. Theo is about to leave for six months: can he and Claire get through this ordeal?

Everything that comes into the world then disappears: it's like breathing. Where will we leave Simon, Marie, Claire, Vincent and Jacques?