Five teenage thieves are challenged by a local bartender to stay overnight in the supposedly haunted catacombs of a nearby cemetery, promising them a rare treasure if they can make it through the night.

Sandro is a Roman adrift in Venice during the Carnival. After sixteen years of marriage, Sandro can no longer reconcile his spontaneous and lively character with that of his wife Laura, a cultured and composed Venetian woman. Yet another argument prompts him to leave her and seek refuge at the home of a painter friend. Among his many paintings, he notices one depicting a naked woman who bears an incredible resemblance to his wife. Are they two women or one, and in the masquerade of the Carnival, what is real?

Following the opening of a Japanese auto factory in Sicily, the head of the company is kidnapped by Sicilian mobsters. This was a co-production between Italy and Japan's Toho Studios.