The neologistic title of this film translates as "Death Bureau," a secret vigilante organization used by ordinary working folk to rid the city of criminals through secret executions. Woodworker Leo Stoychev goes to the organization for help because his boss Branco won't repay a loan and may have had something to do with the accident that crippled Leo. The Mordbüro is responsible for the death of a crooked lawyer, and Inspector Raoul becomes suspicious.

A young Jewish girl, Sara, is looking to escape the clutches of the Third Reich after seeing her parents and sister brutally slain by a smuggler who betrayed them while attempting to escape to England. Terrified, she is sheltered by her childhood friend Jean, a homosexual in a clandestine relationship with his lover Philippe.