Bull Webster is a taxi driver with some work problems on his hands: the Spider Corporation, a giant financial holding company, has decided to buy out his taxi co-operative in order to make it go bankrupt and purchase its land at a low cost.

Don Vasari is an anti-conformist priest. For this reason he is transferred to a juvenile prison in a small town in the southern of Italy. Nino, a sixteen year old inmate, is accused of murder but Don Vasari does not believe his guilt and he starts a courageous investigation to help him.