Michael Kroh, a professional fisherman at Königssee, is found dead in the lake. Beissl is aware of the family's tragic fate. The father of the deceased died in a fatal accident in the mountains a few years ago. The youngest sister, Sina, was then raised by Michael and his wife Betty. However, the adolescent girl caused problems and there were also disputes with her oldest brother Peter.

Are the siblings involved in the murder? Or is the real culprit the restless Anderl, a school friend of Beissl's daughter Eva, who stole a statue of a saint from the local church at the time of the crime?

Beissl strongly suspects Anderl, while Jerry increasingly focuses his investigation on Sina. The 17-year-old and her boyfriend have big plans. But they need money to make them happen.