To gain fame quickly - three actors - Mino, Giacinto and Mirella, stage a fake murder (Mirella is the "victim"), then plan to find the "body" at the most opportune moment. Unfortunately, a real murder takes place in Mirella's apartment when a young woman named Margaret is killed. Having left...
De Luca is killed by Marchetti's chauffeur. Marchetti ordered the murder because he was to be accused by De Luca. The two have a car accident while going home to get an alibi. There is a witness, Sironi, who calls the police. But when the police arrive the car has gone and so have the two men....
Luigi, a middle-aged engineer who, getting increasingly worried about the rising crime rate in his surroundings, follows the advice and example of his sleazy drinking cronies to arm himself with the titular weapon; the problem is that he starts carrying – and, occasionally, brandishing – it...