An architect, who has recently married a new, younger wife, tries to re-connect with his ex-wife, who is being courted by another man.
Pekka and Pätkä work as inventors. Pätkä accidentally takes a photograph of bank robbers, who begin to track down the photographer. Soma Koivu, the former secretary of the property manager Kiivas, and police officer Antero Kangas help Pekka and Pätkä catch the robbers at a film studio where Pekka is working as a stand-in for Superman.
Niskavuori's Aarne (Arne från Niskavuori) is a Finnish drama film from 1954. It is based on Hella Wuolijoki's play Niskavuori's Bread. In chronological order of the Niskavuori series, the film is the fourth. Aarne has married Ilona and left the house in Niskavuori, which he hosts, where his former wife Martta still lives, while the old mistress is holding the reins. Aarne and Ilona live in Helsinki, but Aarne has not been able to completely break away from Niskavuori, but keeps secretly in touch with the headmaster and gives instructions on the farm management.