Viele Kühe und ein schwarzes Schaf.

Martin has failed as a veterinary surgeon and works in research. But then he loses this job too. He is neither stupid nor lazy, just incredibly scatterbrained. His girlfriend Tessa has had enough and throws him out. Martin is left in a shambles. Just at this moment, he receives a call from his mother Beate: his father Henning, a veteran country vet, has broken his arm and needs Martin's help.