Four mercenaries, employed by an African country, are responsible for negotiating a purchase of arms. They seize the sum planned for the negotiations and three of them flee to Spain after having abandoned the fourth in the bush. The latter manages to survive and then finds his accomplices who lead happy life ...

Former pirate chief MacDonald has gone to England and won amnesty for his band of buccaneers, promising to reform them into peaceful colonial ways. But what follows is an engaging and ruthless tale of deceit and treachery as MacDonald faces ruin due to traitors who plot to overthrow him and seize Blood Island whose waters contain a valuable treasure.