"Whoever cheats the state cheats his fellows" - the hunt for a tax cheater. Sir. Middelmand, a former tax cutter, is the protagonist of a moral drama that illustrates the consequences of evading his contribution to public spending. His wife is discharged from the hospital; his son is thrown out of school; as fire breaks out in his home, he discovers that the water has been closed, etc.
A young diplomat falls in love with a lady he has followed in the street and in order to establish a relationship, he introduces her into her house proposing a connection between Titì, the lady's dog and her Pekingese.
The two drivers Giovanni and Gaetano are friends. Gaetano, bold and ruthless, thrives in the black market, while Giovanni, who is a naive and fundamentally honest worker from the North of Italy, cannot get any profit and his wife, an energetic and talkative Roman woman, can't help blaming him for his poor business skills.
A cavalry officer is framed for the murder of a fellow officer and cashiered out of the army. After he gets out of prison he vows to find the renegade who framed him and bring him to justice.
Insurance salesman Paul is to be engaged with Louise, the daughter of his boss. Trying to sell insurance to a millionaire he meet the millionaire's daughter Annette whom he fall in love with after complications and funny business.
