Stephane, the wife of a prominent magistrate, shoots and kills a man in her home and claims he tried to rape her. While investigating her case, her lawyer becomes hopelessly enmeshed in a web of lies and subterfuges concerning her past.

On the hill in Saint-Cloud, in a broad street bordered by residences, a delivery man is going through the back of his van. He prepares the delivery: wine, water, alcohol... After checking the order he routinely loads the crate on his shoulder and strides under his load through a small delivery gate in the wall of a garden, he rings and enters... All the action will take place in one night, a single night, in this bourgeois house in Saint-Cloud.

Mathieu is called on by the French government to investigate murders in the Asian community of Paris. With Chinese and Vietnamese engaged in a bloody slaughterfest, the key to the mystery lies with the orphan girl who Mathieu helped to escape during the fall of Saigon in 1975. Now a beautiful young woman, Mathieu is reunited ten years later with the refugee, and together they attempt to solve the case. He uncovers a CIA plot that has carried over from the last days of the Vietnam War and that is related to the Paris murders.

Film montage of documents shot between 1895 and 1900 by the operators of the Lumière brothers.