In april of 1975, a moroccan fisherman disappears after being summoned to a Marseille police station. The next day, a young algerian thief is taken away by officers upon his release from prison. They share a lawyer, a young corsican communist who alerts a journalist. They throw themselves into an investigation and discover the existence of a warehouse on the docks where the police have been detaining immigrants before deporting them for over ten years. The discovery became a national scandal, before being suppressed and eventually forgotten.