Shurik, a kind but naïve ethnography student, falls in love with the intelligent, athletic and beautiful All-Union Leninist Young Communist League member Nina. He has a rival in the wealthy comrade Saakhov, who concocts a kidnapping scheme to force Nina to marry him.
Twin sisters Asya and Slavka dream of enrolling in a nautical school. After the first refusal, the girls go to Transbaikalia, get a job at the fur farm, make real friends, fall in love, experience all kinds of adventures and still dream of the sea.
