Horst Schlämmer is back—and he's fed up. People all over Germany are in a bad mood. So he leaves Grevenbroich and sets off in search of happiness. It must be somewhere!

Hape Kerkeling
as Horst Schlämmer

Tahnee Schaffarczyk
as Gabi Wampel

Meltem Kaptan
as Mandy

Laura Thomas
as Anna

Jördis Triebel
as Roswitha

Norbert Heisterkamp
as Günni

Eva Habermann
as Gesine Breitenbach

Kerstin Thielemann
as Mrs. Schlonzbach

Christian Hockenbrink
as Dr. Carstens

Patrick Joswig
as Wolle