The presence of mafia boss Vangelli's yacht in front of the island of Ventotene brings a group of prisoners of the penitentiary close.

• Parva Cinematografica
• Philippe Leroy
• Dagmar Lassander
• Raymond Pellegrin
• Franco Citti
• Maurizio Arena
• Augusto Martelli
• Enzo Robutti
• Armando Tortorici