Moscow Institute of Interplanetary Communications carries out experiments on preparing a flight to the Moon. Academician Sedikh, who was the constructor of a super space rocket ship, during his flight is accompanied by a postgraduate student Marina and a young inventor Andrey, who sneaked secretly to the ship. They land on the back side of the Moon, and after a brief walk return to the Earth. A science-fiction film about exploration by Soviet scientists of interplanetary routes.
