Philippe Marcillac grew up in Sète, where he specialized in pranks of dubious taste. One day, as a teenager, he organizes a party in an abandoned villa. Philipe finds himself alone with Marie-Titite, who advises him to restart his life on a more serious footing.
Oscar, a shy lifeguard, flees the wrath of his boss following the disaster caused by the water purification machine he has developed. In his haste, he accidentally grabs a gangster's car containing the plans for a super satellite. A wild chase ensues.
