Mr. Pezzella (Toto) owns and operates a very well established luxury clothing store. He does not like and does not consider right to pay taxes, therefore he uses a tax consultant (Louis de Funès) to be able to evade more taxes. Unfortunately for Pezzella, the Guardia di Finanza decides to send an inspection, in the form of Marshal Topponi (Aldo Fabrizi) and Brigadier Bardi. This triggers Pezzella’s attempts (guided by the advice of his dishonest and ineffective tax adviser) to get into the graces of the marshal and try to bribe him, and sometimes openly declaring it with an excessive dose of servility. These clumsy attempts will cause the marshal a few headaches, due to the intrusiveness of Pezzella, and then will backfire against Pezzella himself. Topponi releases, finally, his survey report, dooming Pezzella to pay a huge fine.