This film continues the story of radio operator Ludwig Bartuschek from “The Sailor’s Song”. Near the end of the Weimar Republic, Bartuschek (Erwin Geschonneck) is working as a mechanic in the Sperber airplane plant. Director Dehringer offers him the opportunity to train as an airplane constructor if he is willing to give up his communist beliefs under oath. Bartuschek will not allow himself to be bought and instead joins the underground resistance movement.
The story of the steel melter Martin Hoff, whose factory delegates him to a drama school, corresponds to the real life of the actor Manfred Krug. Like his (film) hero, Krug works as a steel melter, does artwork, sings and acts, and is sent to drama school. Like his hero, who behaves anarchically and conspicuously, Krug is soon expelled from school.
The aircraft mechanic Hans Bertram is an incorrigible apron hunter who boasts that he can get around any woman. He even makes bets on it. But then he falls in love with the new colleague, the budding engineer Helga Nonnert. He fails to conquer them by storm. After many tangles and fun episodes, she manages to heal him of his gallant frivolity.
