Witty, quirky, and profound - an addictive Viennese mix. Leopold Wallisch, nicknamed "Lemming," has been dismissed from the homicide department at the behest of his malicious colleague Krotznig. He now works for a small private detective agency in Vienna, spying on potential adulterers. When one of his subjects, the retired Latin teacher Grinzinger, is murdered, he decides to solve the case himself. He becomes increasingly entangled in a complex web of power and betrayal, sadism and humiliation. The search for the murderer turns into a race against Krotznig, who is determined to stop his former partner's investigation by any means necessary.