Katharina Hendriks loves her job as headmistress of a vocational school. However, cutbacks threaten to spoil her job, as does the arrival of her brother Erik as a guest teacher. Their visions clash and this has consequences not only for the atmosphere, but also for the pupils.
| Actor | Role |
|---|---|
 Anja KlingKatharina Hendriks | Katharina Hendriks |
 Oliver MommsenErik Olsen | Erik Olsen |
 Carsten BjørnlundBent Hendriks | Bent Hendriks |
 Oliver SauerBernd Olsen | Bernd Olsen |
 Yasmina DjaballahSenna Jansen | Senna Jansen |
 Johanna GastdorfSonja Minich | Sonja Minich |
 Amira DemirkiranShirin Jansen | Shirin Jansen |
 Victoria FleerTina | Tina |
 Vivian MahlerDr. Regina Wolf | Dr. Regina Wolf |
 Achim BuchRobert Minich | Robert Minich |
 Junis MarlonJonas Gerber | Jonas Gerber |
 Andrea GuoCathleen Minich | Cathleen Minich |
 Monika LennartzHertha Olsen | Hertha Olsen |
 Henning HartmannBorchert | Borchert |
 Lars NagelHorst | Horst |
 Stephan BensonWieland | Wieland |
| DDoreen NixdorfVanessa | Vanessa |