The film tells about the symptoms and prevention of heart disease in a playful way. The phenomena that provoke diseases, the scheme of the heart, taking into account age-related changes (animation) are shown. The film is based on the story of the engineer Potapov, who ends up in the hospital with a heart attack due to overwork and an unhealthy lifestyle. The film was shot at the plant "Electrosila named after S.M. Kirov", at the city skating rink and in one of the districts of Leningrad.