The idyll in tranquil Monreal is deceptive: farmer Jobst lies dead in his cesspit, all the clues point to murder. A case for police superintendent Kati Biver and chief inspector Killmer. The latter, however, is rather distracted. The cool cop is suddenly supposed to be responsible for a baby - his baby! Not with him, Killmer thinks, and comes up with an ingenious idea to solve the care issue. He secretly abandons little Marlon outside the police station. Now his colleague Kati has no choice but to look after the little one..