The story of high school students, talented Jan and Karel, who has a problem with math. Their life affects pedantic professor of mathematics Klec, that goes with them on a school trip, which escalates the conflict between them. Jan wants to escape, but Professor Donat will discourage him. Karel fails the exam of mathematics and decides to commit suicide.
Jindřich Plachta
František Smolík
Antonín Novotný
Miroslav Svoboda
Gustav Hilmar
Eliška Pleyová
Věra Gabrielová
Zora Myslivečková
Bedřich Vrbský
Bohdan Lachman
Ferdinand Jarkovský
František V. Kučera
Viktor Nejedlý
Mirko Eliáš
Karel Postranecký
Bolek Prchal
Bohumil Šmída
Elmar Klos
František Čáp
Jiří Vondrovič
Ota Kučera
Jan Vyskočil
Miloš Midloch
František Sádek
Jarka Ženatý
Vladimír Novotný
Vladimír Čech
František Filipovský
Josef Picek
Anatanas Varnas
Zdeněk Zach
Irena Novožilová
Helena Bušová
Bobina Horká
Irina Vergunová
Anna Gabrielová
Václav Menger
J. O. Martin
Josef Steigl
František Kovářík
Otakar Mrkvička
Václav Pecián
Josef Oliak
Miloš Makovec
Gustav Schorsch
Eduard Hofman
Vlastimil Borovička
Karel Šmíd