Antonio is a nineteen-year-old orphan to whom his mother has left a huge fortune. Unfortunately his tactless tutor has undertaken to dispossess him - little by little - of his money. Antonio, who is not wet, is aware of his tutor's schemes and decides to put an end to them. To this end, he asks a gang of young bandits to break into his own house and to steal the money ... which is his! The burglars perform their task satisfyingly, not without killing the tutor, but when they leave Antonio's house they are surprised to find the road blocked. In fact the neighboring valley is to be flooded by the opening of a dam...