A dancing group trains czardas. A dancer Míša loves dancing with a dancer Eva. A presenter introduces him as a welder whose greatest hobby is dancing. He also reveals that Míša likes Eva very much. Míša goes to work in a factory but he leaves the required personal protective aids in his cabinet. He wears sneakers while he is welding. He is thinking about Eva and does not focus on work. It ends up in a disaster. The welding machine falls out of his hands and his leg is severely burnt. If he had been wearing safety boots, nothing would have happened to him. Then he sits at a dancing training, his leg bandaged, and he is sadly watching Eva dancing with another dancer.