Saturday is Ariane’s husband’s favorite day. Ariane hates red Saturday, since it suggests dinner plans with friends and activities with children. She prefers the routine of weekdays. This weekend is also their daughter’s birthday, which means Ariane has a party to plan. She wonders when one can stop throwing birthday parties for children. 

When Ariane goes into the bathroom to take a shower, her husband steps in, sitting on the bathtub. He talks about his work week as Ariane showers, apparently unaffected by her nudity. Later, at breakfast, he suggests they call Zoe to babysit that evening and go out for a movie. A shocked Ariane drops her jam-smeared toast; the movie her husband suggests is about a man’s extramarital affair. Ariane does not want her husband to watch such a movie, lest it give him ideas. She tells her husband that they don’t have the time to go to the movie theater as they have to plan their daughter’s party.

Lucie meets Ariane at the tennis club for their customary Saturday morning game. Although Ariane likes the physical aspect of the game, she does not enjoy competition, so she lets Lucie win. 

Afterwards, they get a coffee. Lucie describes the troubled love life of her sister, Marion.