Katja, a young journalist, tries to do her A-levels instead of her friend. But the class teacher falls in love with the supposed student. But before the happy ending, the class goes on strike and the chemistry lab is almost blown up.

Uschi Glasas Katja Hutten
Walter Gilleras Dr. Wagner
Willy Millowitschas Willy Schulz
Werner Finckas Direktor Dr. Zibelius
Wolfgang Condrusas Klaus Fuchs
Rudolf Schündleras Dr. Krapp-Krapproth
Inge Wolffbergas Dr. Sieglinde Boll
Ulrich Beigeras Prof. Hasemann
Siegfried Schürenbergas Chefredakteur Berg