A wealthy Australian industrialist in the year 2040 accidentally opens a portal into the past with one of the scientific experiments that he has financed. A cataclysmic nuclear war that dooms humanity erupts almost at the same time. The industrialist decides to go through the portal and try to change history to prevent the final war. He assumes the identity of a dead prospector after finding himself in the year 1918. The time traveler enlists the aid of local Aborigine tribesmen while planning to use his knowledge of the future to become wealthy once again. Only this time, he will be using his wealth to influence the course of history and those who made it.