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 summer internship of ninth-grade students from Riga at a mechanical plant.

The action of the film takes place in Latvia and spans the period from 1939 to the early 1970s. The events that occurred in the country had various effects on the fates of the characters. But throughout it all, love guided them — it scattered and gathered, made them suffer terribly, and made them the happiest people in the world...