Before parting for the summer vacation, the students Antoine Lartigue and Marie Malhouin decide to get engaged. The news sets a tone of domestic pride and family pride that will soon collide with very different temperaments. Marie’s father Émile Malhouin is cautious and reserved, the kind of quiet, watchful presence who worries about weddings at a distance, while Antoine’s father Adolphe Lartigue is bursting with cheer and boasts about his big family. He insists that all the Malhouin relatives come and stay with his clan in a bright villa in the sunny, extravagant world of St Tropez, turning the engagement into a large, noisy social affair rather than a quiet union between two young people.
As the families arrive, Émile must endure a steady stream of bonhomie, bravado, and the sun-soaked, if noisy, warmth of Adolphe’s Provence-tinged hospitality. Émile’s cool, Norman steadiness stands in sharp contrast to the Mediterranean fire that drives Adolphe’s welcome. The clash isn’t just about manners; it’s about temperament, values, and the way each side shows love and pride in front of others. The newly betrothed couple finds themselves navigating this cultural collision, and Antoine’s fiery streak soon surfaces in a moment of conflict during a disco. Marie dances with an old flame, and Antoine’s temper erupts, leading to a sudden, painful outburst that ends with the engagement wavering on the edge of collapse. In a quiet and emphatic decision, Marie chooses to break off the engagement, a choice that deepens the fracture between the two families and leaves everyone reeling.
The rejection stings Adolphe, who feels insulted not only by the loss of the wedding plans but by how the situation has undercut his role as a host and patriarch. He makes remarks to Émile that cross lines, and the tension between the two men deepens in a way that feels almost personal, turning a family visit into a test of loyalties. In the wake of the argument, Émile decides to leave, gathering his family and their belongings for a rapid return to Paris. The villa’s walls, once filled with banter and laughter, now echo with a heavier silence as the Malhouins depart, each step carrying the weight of the changed engagement and the unsettled dynamics.
Back in Paris, the mood grows anxious. One evening Marie does not come home, and Émile picks up the phone, calling every number he can think of in a careful and determined search for Antoine, who has disappeared in the wake of the dispute. The phone lines are stubbornly busy, and Adolphe travels from city to city, hoping to locate the missing couple. He arrives in Paris with a sense of urgency, intent on finding Antoine and bringing the truth of what happened to light. The search becomes a test of pride and persistence, a reflection of how far each family is willing to go to protect or reclaim what they value most.
In a tense moment of reckoning, Adolphe gathers the courage to knock on Émile’s door, unsure of what reception awaits him. The response is cool—frigid enough to signal how fraught the situation remains—but just when the atmosphere seems ready to fracture again, a small, hopeful update arrives. Marie rings home to say she is all right and that she is with Antoine, a quiet confirmation that the bond between the two young lovers endures despite the upheaval. The ending leaves a sense of tentative relief rather than a tidy resolution, hinting at future conversations and choices for the families as they navigate the consequences of their passions, pride, and the summer that brought them all together.