Two deadbeat friends barely pass the entrance exam for the Carabinieri, the national gendarmerie of Italy, but love for the same woman gets in the way.

Carabinieri's lieutenant Duilio Cordelli is in charge of investigating fake banknotes traffic. He discovers that a 60 billion lira bank robbery is linked with his case. Things get more complicated when the main suspected, Lorenzini, is killed. Moreover, Cordelli villa is blown up and the evidence points to the conclusion the whole case could be solved only by flying to London.