Ubros has been to the Earth and prepared it for the generations of humans to come. The planet had been cleansed by a huge asteroid sent to the Earth by the alien. Now, humans are evolving at a pace not intended naturally, but helped by Ubros. Their intelligence and physical characteristics have been improved by a sophisticated transition process. He, along with another alien, a female he saved from a faraway world after it was invaded by a hostile force, are now leaving Earth. Ubros' mission is to find and punish the alien invaders who had planned to make Earth their own. He had previously destroyed the fleet they sent to invade Earth, but in the process lost one of his valued crew, Kreg. Ubros is determined to find and bring the ones who sent the killer invaders to justice. Ubros has a limited amount of time to accomplish his mission which is located near the great star Sirius. He must return to the Earth in time for the coming of the promised savior. He had been told he must be present when he is born. The coming had been foretold millions of years ago. Ubros is not merciful or forgiving; he will not tolerate incursions on Earth. He is continuously tested by those who consider the planet a place they can inhabit or destroy. He relishes the challenges.