Françoise, a charming young saleswoman for a leading jeweller, is being courted in vain by a billionaire shipowner. He attributes her failure to the existence of a rival, and decides to have her followed by a private detective. Françoise, commissioned by her boss to transport a valuable necklace to Cannes, is accompanied by a bodyguard charged with her safety. Françoise, the bodyguard and the detective meet on the train and a series of misunderstandings ensue.

Les Etoiles de Midi is an engaging docudrama about some of the more spectacular exploits of French mountain climbers over the last several decades. In one re-enacted story, there is a wartime escape through the mountains, and in another, a daring rescue of a pair of climbers who had been missing. The actors themselves are adept at the sport of climbing, and they give the scenes an immediacy and real daring that brings the stories alive. A combination of their acrobatics and skill and the outstanding episodes in the history of French climbing creates a winning 78 minutes.

To impress Fanny, an erotic film actress, Marco takes her on a ride in her new racing car. On the way, it's the accident.