Toute l'équipe du Central Nuit est mobilisée. En effet, un meurtre commis de sang-froid a été signalé.
An ordinary accountant is violently assaulted by two men. A stranger comes to his rescue and provides first aid, but runs away as the police arrive. The Good Samaritan is Omar, an African doctor, a refugee in France illegally. But his statement could bring down Bati Morelli, a major gangster.
