Pierre Renard is the blackboy of the writer George Vallier. At the time of a reception, the Italian actor Aldo Barazutti takes him for the writer and proposes to him to come to work with him in Tunisia with the development of a scenario. In fact Barazutti wants only to flee her wife to find her mistress Valerie. Misunderstandings when Vallier joined them. They must flee in the desert a jealous husband...

The lawyer is visiting a prison to meet with a violent criminal who has been condemned to death. During the visit, things turn bad, there is a riot where prisoners escape and the criminal escapes taking a lawyer hostage.