The son of the couple Melanie and Thomas Rensing has been kidnapped. Ekki is able to persuade Wilsberg to help his cousin's family, as they do not want to inform the police.

Ekki is about to move in with his steady girlfriend Silke. But shortly afterwards he is hit on by the pretty Charlotte. Ekki is ready for an affair.

Ekki is getting married. Wilsberg can't believe it. And he's supposed to be the best man. Despite his doubts about whether Kerstin Buckebrede is the right one, he can't say no to Ekki's request.