During a business meeting at the Exotarium, beauty journalist Eva Christ falls over a bucket of fish. This rude misstep not only brings her into the life of the likeable zookeeper Max Hay, but also causes her a tricky relationship problem: Her growing affection for the unconventional zookeeper jeopardizes her long-term relationship with her lover. Karl, who has two children with his wife Ines and works as a lawyer in his father-in-law's office, leads a perfectly organized double life - until rival Max crosses his path.