A helicopter crashes in the Sahara Desert. The entire crew are killed - only a small infant miraculously survives. Emir Tafud, who has no children of his own, brings the child up as his successor. When Ben is 25 years old he decides to set off in search of his true parents. In Casablanca he meets French crook Jacquot, who takes him with him to Monte Carlo. They both actually manage to find Ben's mother Christine. She tells Ben that his father was a scientist on a secret mission to Africa. Christine wants Ben to stay in Monte Carlo and take over her firm, but Ben has his heart set on living in Belem with his adored Amina. But now Ben gradually unearths a dreadful secret: Christine's second husband François was responsible for the death of his father, who had discovered valuable minerals in the Sahara. After a bitter struggle, Ben finally succeeds in saving his homeland from Western greed.

Yaasin, a policeman from Tangier who has almost become an alcoholic, spends most of his time in an exclusive brothel. Several characters arrive in the city at the same time: the millionaire Eric Burns; the German woman Eva Miller who, with her little daughter Gudrun, makes herself a living by doing frauds and small thefts; the smart gangster Rustum Wadi who is looking for a talisman that at that moment is in the hands of Andrews, a homosexual British collector. Yaasin is supposed to protect Burns, but when Andrew's corpse appears the case takes an unexpected turn.