The former paratrooper, and now the worker of the geological party Sergey Krutov, hurries to the station to meet a stranger girl and take a note from her for his friend - Having delivered the cherished message, he gladly learns about the arrival of the one he was thinking about, saving someone else's love.

The assistant captain of a foreign merchant ship, Chief, contacts an international drug cartel. He agrees to transport a large shipment of drugs in unmarked containers. The markings will be added later, only at the shipper's request. Unexpectedly, the ship has to call at a Soviet port to refuel.

Several children go on a lifelong space mission to Cassiopeia because they don't want to go to school.