An Army officer returns to the Smoky Mountains and tries to convince his kinfolk to allow the Army to build a missile site on their land. Once he gets there, he discovers he has a look-alike cousin.

Cantinflas, on a drunken night, becomes Army soldier. Soon, he meets the Devil who tries to make it an evil being.

Sergeants flirt with a nurse aboard ship and go fishing for a Japanese Sub.

A civilian, ordered to report to his draft board, slips off into a dream about the army life ahead of him. He is assigned to a remote desert post where the soldiers crave female companionship. He forges orders that brings a platoon of WACs who are forbidden to fraternize with the soldiers.

A film student at Ryerson University struggles to complete her thesis project.

The fourth addition to the franchise sees the return of the army boys including Sergeant Ong, Lobang, Ken Chow and Aloysius, joined by a new female officer, as they are called back for in-camp training under the Armoured Formation of the Singapore Armed Forces. Hilarious situations happen when they are back training together and their military roles reversed. Their brotherhood is also put to the test when new enemy threats arise.

Sergeant Friman is developing an automatic submarine detector that piques the interest of both, Swedish and Russian spies.

Relations between Sweden and Finland come to near breaking point. When further negotiations led by President Mara fail, Sergeant Körmy interferes in the course of events.

The Minister of Defence asks sergeant Körmy to take part in operation, where the United States and Russia are to hand over their nuclear weapons launch equipment and codes to neutral Finland.

Pasqualino Frafuso, known in Naples as "Pasqualino Seven Beauties" is a petty thief who lives off of the profits of his seven sisters while claiming to protect their honor at any cost, Pasqualino is arrested for murder and later sent to fight in the army after committing sexual assault. The Germans capture him and he gets sent to a concentration camp where he plots to make his escape by seducing a German officer.

Army Doctor Eva Marini wants to join a regiment to secure equal rights for women. So her commanding officer sends her off to a boot camp led by Renzo Montagnani, where only the most unruly soldiers end up.

Uuno is forced to complete his mandatory military service when it is revealed that he only spent one day in the army in his youth. As is typical of the Turhapuro series his family and friends become closely tied in with these events. His friends Härski Hartikainen and Sörsselssön return to the army for a refresher course and by chance Uuno's father-in-law, Councillor Tuura is made the Finnish Defence Minister. In one of the most memorable scenes, Uuno's wife, Elisabeth, dresses as Uuno and substitutes him for a day as Uuno has an apparently urgent meeting (at a restaurant) and while becoming lost in the woods with a malfunctioning radio, Tuura accidentally declares war on Sweden.