Two young women, Margaret and Lisa, are set to take the overnight train from Munich in Germany to stay with Lisa's parents in Italy for Christmas. Unfortunately a pair of psychotic hoodlums and an equally demented nymphomaniac woman terrorize the pair.

A shy employee at a furniture store, accountant Artioli is sent by his manager to the airport to pick up a young black woman who is to be hired as a domestic worker. What seems like a mundane task turns into a dangerous adventure. The woman is in fact a princess being pursued by the secret services. The poor accountant will have to face killers, secret agents and African guerrillas.

At the local cinema, an audience watches a Spaghetti Western matinee. During the film's on-screen climactic duel, a bullet is fired into a patron. With no leads and a theater full of suspects, police investigators lock the doors, put everyone back in their seats, and run the movie again. But will this shot in the dark reveal the real killer?