Richard lives apart from his wife. He is unemployed. His life is really not running smoothly right now. Rather by chance, he gets into conversation with the director of his daughter's school, who is desperately looking for teachers - which gives Richard an idea. He is a mathematician. And after all, everyone can become a teacher!

Christoph Maria Herbst
as Richard Glossat

Brigitte Zeh
as Anke Glossat

Kai Lentrodt
as Christoph Geiger

Virginia Leithäuser
as Isabell Glossat

Ramona Kunze-Libnow
as Beate Klimm

Alexander Hörbe
as Martin Sorokin

Florian Appelius
as Johannes Rauch

Michael Hanemann
as Friedrich Pizek

Tua El-Fawwal
as Filiz Ünder

Riccardo Campione
as Luis Manfeld