Christoph, an employee of the insurance company Monaco Assekuranz in Parkstadt, is found dead. According to coroner Dr. Heise, he died of a heart attack. His coworkers describe the victim as an ordinary, unremarkable person whose personal life is a complete mystery to them. The trio of Angelika, Harald, and Ludwig begins investigating. The dead man reportedly prevented a robbery at a kiosk at Munich Zoo five years earlier.
