Mona and Egil have grown up with a jumble of parents and stepparents. Now they have a total of three pairs of parents. Mona gets pregnant, and all her parents want her to get married. During the engagement party, the parents cheat on each other one by one, which leads to Mona escaping with her fiancé. They decide not to get married. The parents travel to Copenhagen to look for the escaped young people.

Infofilm made by Norsk Film and NSB in 1948 about the plans and work to complete the Nordlandsbanen line to Bodø. On December 10, 1947, the Nordlandsbanen opened the section from Dunderland in Rana to Lønsdal on Saltfjellet, a section that was mainly built with the help of Soviet and Serbian prisoners of war. The film focuses on the work that is underway on the last planned stretch, through Saltdal to Rognan, Fauske, Tverlandet and Bodø.