Irča Miňovská, the daughter of a car factory director, meets mechanic Lexa Hora by chance. They fall in love, but Irča's father does not want his daughter's unequal relationship and decides to send Irča to a boarding school so that she cannot see Lexa. Lexa leaves the plans for her new engine with her boyfriend Harry Peters at the factory, resigns, and leaves to forget about Irča. Director Miňovský would like to produce a new type of engine, but Lexa is nowhere to be found...
Rolf Wanka
as Lexa Hora
Jiřina Steimarová
as Irča Miňovská
Theodor Pištěk
as Tomáš Miňovský
František Paul
as Ing. Harry Peters
Truda Grosslichtová
as Lola
Antonie Nedošinská
as Šulcová
Čeněk Šlégl
as vedoucí
Jan W. Speerger
as Kraus
Jan Sviták
as detektiv
Eliška Pleyová
as animírka
Ella Nollová
as bytná
Běla Tringlerová
as Marta Navrátil
