In German East Africa on the eve of the First World War two freebooting adventurers - one a flamboyant Irish American, the other an impeccable young Englishman - pit their wits against the gross German Commissioner from whose territory they are making their living as game hunters and ivory poachers. But the outbreak of war gives the signal for their private skirmishing to flare into a relentless vendetta pursued with devastating violence by land and sea, so that what begins as a comic escapade gives way to chilling horror ...