Mathilde and Damien go away for the weekend. They take the trip to get to know each other and share their common passion: surfing. They decide to go and camp on the Atlantic coast. Things get complicated when they encounter Corléone and Scarface, two louts looking for a fantastic treasure hidden on the beach. “La Politesse des Dunes” is a modern-day fable about the gold rush and the search for a lost paradise: El Dorado.