The film tells about the scientific works of VV Smolyaninov, Doctor of Physical and Mathematical Sciences, an employee of the Institute of Mechanical Engineering of the Academy of Sciences of the USSR, devoted to the problem of control systems. On the basis of the work carried out, he managed to create the locomotor theory of relativity. Institute staff are conducting experiments in the laboratory. VV Smolyakov comments on the course of experiments (synchronously). Scuba divers explore the seabed. The octopus swims in the water. Spider on a web. Snail. Caterpillar. Rocky seashore. Tidal bore. Dog. Children's toy - a mechanical dog. Acrobats perform gymnastic exercises.