When a car crashes against a tree, an illegally kept baboon escapes to old farmer Jakob Krämer's barn. After raiding the catering van, the monkey is spotted. Vet Hansen gets the university to send an expert, who turns out to be his former study mate Kajo Winter, who return for personal reasons after running a Kenyan baboon sanctuary. They manage to capture the monkey and prevent the fiend who let it escape from stealing it, even arrest him as Jan sabotages his car.
—KGF Vissers