Luxurious bishop Hemmelrath urgently needs more income, but the new electronic donation system isn't yielding serious money. The only exception is a female donor in father Braun's new parish, a fashionable spa near the Polish border. Vicar Mühlich identifies her as an industry heiress using a fake name and is dispatched to help Braun get half a million Euros out of her. In the spa, petty ex-con Klaas Wittek is killed during a nightly motorbike ride by a hidden cable. Commissioner Geiger has to handle the case jointly with his Polish colleague Stanislaw Kowalsky, as the bike was stolen in Poland. Later, Lithuanian aristocratic playboy Wiktor Radziwill is murdered in Leo Meschkat's luxury spa hotel, by trowing one of Dr. Valentin's lethal Australian jellyfishes in his bath, just after his infidelity was overheard.