French secret agent Josselin Beaumont is sent to kill Colonel Njala, the dictator of Malagawi, a fictional African country. However, before he manages to accomplish his mission, the political situation changes drastically and the French secret servic...

French secret agent Josselin Beaumont is sent to kill Colonel Njala, the dictator of Malagawi, a fictional African country. However, before he manages to accomplish his mission, the political situation changes drastically and the French secret service resorts to handing over Beaumont to the Malagawian authorities. After a long, unfair trial, during which Beaumont is injected with drugs, he is sentenced to long-term penal servitude at a 're-education camp'. Following a daring escape with one of the other inmates, he returns to France and informs the French secret service of his presence, promising that he will kill Njala, who is in France for an official visit, thus getting his revenge on the people who betrayed him. The secret service responds by setting other agents on Beaumont's trail. However, he manages to remain one step ahead, humiliating and killing some of his major betrayers, including Rosen, the sadistic chief of the secret police. After Rosen falls in a gunfight, Beaumont switches their identity cards, spreading confusion within the secret service and temporarily reducing Njala's guard. Beaumont eventually tricks a secret service agent into shooting the dictator. While government officials confer with higher authorities, he slowly walks towards Njala's helicopter, but is shot dead by government agents, who have received the order to do so.