In a small French town, the lives of a group of friends are shaken by what seems to be a trivial incident that triggers a series of unexpected events. It all begins on a hot summer day when one of them, Louis, lets his frustration take over and decides to slap his strict boss during a heated argument in the office. This simple act of rebellion sets off a chain of entanglements involving family members, lovers, and acquaintances, all forced to choose sides in this comedy of chaos.
As Louis faces the consequences of his impulsive action, his friends try to find solutions and prevent the situation from spiraling out of control, but along the way, unexpected revelations about their own lives come to light. Lucie, his girlfriend, questions the longevity of their relationship; the inseparable group of friends grapples with hidden problems that arise from pressure and loyalty, and the slapped boss becomes an increasingly colorful and unpredictable figure.
The film explores the complexity of friendship, social hypocrisy, and the small daily tensions that can grow into significant issues. With a humorous and critical approach, the story unfolds, showing how a single act of rebellion can forever alter the fabric of relationships and unleash the freedom to express true feelings. All of this is wrapped in a nostalgic charm of 1970s French cinema, capturing the essence of a generation in constant search of authenticity and connection.