Filmed during the annual 24-hour endurance race at Le Mans, Michael Delaney is a Porsche driver haunted by the memory of an accident at the previous year's race in which a competing driver was killed. Delaney also finds himself increasingly infatuated with the man's widow.

Olivier, a handsome but callow and moody young student, picks up an enthusiastic actress during a theatre rehearsal, and is introduced to her acquaintances -- a group of jaded rich kids who spend their time storming around the Riviera harassing passersby, throwing wild parties and following all the latest trends. When sexy Elke gives him the eye, he leaves the actress in the lurch and joins the gang for a decadent party aboard a yacht. However, Elke's wanton ways and Olivier's inexperience do not mesh, and in a snit, he accidentally sets the yacht afire. The gang wreaks its vengeance by luring him into a dangerous contest of bravura on a construction site.