Through the story of the Kampuchean boy Maksimka, the film tells about the fraternal assistance of the Soviet people to the people of Kampuchea. View of the seaport in Vladivostok. Motor ship "Lyubov Orlova" at sea. Arrival of the ship to the port of Kampuchea. The rally in the port. Kampucheans are greeting Soviet sailors. Landscapes of Kampuchea. View of destroyed buildings in one of the cities of the country (the consequences of the American aggression in Southeast Asia). Residents with belongings at the destroyed houses. Women prepare food, take care of children. Loading and unloading operations in the port of Sa Hong. The work of the pumping station, built by Soviet sailors. Trade in the city market. Soviet ships depart from the pier.