Massimo, a young Neapolitan dancer, go to Rimini in search of fortune and adventure. He makes friends with the DJ Franco, and he introduces him to his sister Rosaria, who works as a salesgirl. Franco performs at a nightclub and becomes the lover of the owner, neglects his girlfriend, Laura. Her sister starts a relationship with Massimo. Massimo teamed with Laura participates in the modern dance competition. But Laura and Rosaria discover they are betrayed by both of two friends, and take revenge, with the help of "professor" their friend.