After the train conductor Pētersons receives money transfer from an unknown source, he suspects foul play involving the cargo he's transporting. He decides to do his own investigation into the matter, not realizing that he's putting himself and those around him in danger.
The son of Martins Viksna, the collective farm chairman, Klavs comes home from the military service and starts working in his native kolkhoz but does not understand his colleagues, so he goes to town.
