A retired police officer discovers a dead body on a frozen lake. When his own family members become the prime suspects, he decides to start his own investigation.

Because they got into a fight with party animal and mayoral candidate Benny Jagschitz, Flo Kienzl was thrown out of the police and Eddi Kovac went to jail. Now Eddi is on probation, just about to start a new life, when Flo stands on the mat: worn out, clever and with a really good reason.

In the late 1960s, when the young Jewish businessman’s son Victor Dessauer fails to secure just punishment for the Nazi concentration camp commandant who tortured his parents, he resolves to take the law into his own hands.