A student monitor in a high school in the French provinces has no control over the pupils. He is in love with the caretaker's daughter but his superior, the Dean of Discipline, is also his love rival. Now, the two men are sent on military temporary duty and irony has it that in the Army the Dean is only a private whereas the mere supervisor's rank is ... corporal!
An independently wealthy collector of objets d'art tries to influence an artist's model away from marrying a notorious scoundrel and to help an Asian importer raise money for a son's surgery by buying a sacred statuette of Buddha, the sale of which the importer believes will curse him; therefore, the importer secretly plans to poison the collector after receiving the cash and keep the statuette in his possession.
Adalbert "Mussu" Koikkalainen inherits 9,000 marks from his uncle. To buy a milk shop, Koikkalainen needs another thousand marks and work experience, so he applies for a job at the department store Sampo, where he is hired as a scapegoat to receive customer complaints.
After an argument with his newspaper's city editor, press-photographer Jimmy Hudson quits his job and takes up free-lancing as a street-photographer for a living.
Mona and Carl Johan are having a hard time. They are going to get married, but then Carl Johan is called up to report to the barracks on the wedding night.