Retirement - that could actually be a nice thing. But Paul Dietze - Wilsberg's friend - has nothing to celebrate. The hard-earned savings are gone.

Sister Christa, who takes care of the finances of her monastery, has invested money on the stock market and has shown a lucky hand: 1.5 million euros in speculative profits.

Wilsberg has a guilty conscience: his new client Britta Mantzke is found dead near the Aasee. Inspector Springer and Overbeck assume it was suicide.

Ekki is invited to Bielefeld for a friend's company anniversary. Wilsberg accompanies Ekki to see his friend Manni in Bielefeld. But the meeting doesn't happen.

Private detective Wilsberg falls victim to a burglary. Worse than the shock of the crime is that the money he had saved for his cruise with Anna Springer was stolen.

Ekki is invited to Bielefeld for a friend's company anniversary. Wilsberg accompanies Ekki to see his friend Manni in Bielefeld. But the meeting doesn't happen.

Wilsberg has to go to the island of Norderney - with Tessa Tilker, a lawyer colleague of Alex from Bielefeld, who needs his expertise in inheritance law.

Wilsberg's friend Ekki urgently needs help. Ekki's ex-girlfriend Silke Sestendrup introduces him to his daughter Hanna. Ekki is supposed to pay maintenance retroactively for the last six years.

Wilsberg and Ekki suddenly become entangled in a case of cyberbullying and fake news. It involves slander, paid lying campaigns and hurt feelings.

Finding evidence is Wilsberg's daily bread. But obtaining evidence to prove an employee's theft is not.