On a sun-kissed beach, six people linger lazily, each confident of fulfilling his or her desires before the day is out. A wealthy heiress, Emmanuelle, has designs on a handsome adolescent, Ivan, but his interests lie elsewhere. Having gratified Emmanuelle’s womanly needs, Ivan immediately sets out to make his next conquest, the mistress of a well-known writer...

Taking the place of the police, whom he finds neither fast nor efficient enough, a journalist named Hugo sets out to find the perpetrator of a murder. Suffocating in the small town where he plies his trade, he is eager to seize the opportunity that will make him a great reporter. The discovery of a murdered young woman - a high-fashion model - puts him on the trail of diamond smugglers. Despite the cautious advice of the newspaper editor and the pleas of his wife, who senses the dangers threatening them, Hugo forges ahead, plunging headlong into the labyrinth where gangsters are luring him to disappear. He finally unmasks the murderer. He finally gets his sensational story - but through his own carelessness, another girl falls victim to the gang. At the last second, the wife he thought he'd lost through his stubborn, madly clumsy attitude is still there, ready to comfort him.

Michel Piccoli plays a police inspector whose best friend is murdered on the orders of gang boss Charles Vanel. The inspector knows full well that Vanel is too crafty and well-connected to ever stand trial for his crime, so he carefully lays a subtle trap for his adversary. Unfortunately, both Piccoli and Vanel are thwarted by a pair of scheming females.