In 2033 Captain Jack Commer drops the planet-wrecking Xon bomb to end the Final War. The remnants of Earth's population are hastily evacuated to Mars, where previously unknown native Martians rise in rebellion, led by their new human emperor, the traitor Sam Hergs. Amid family squabbles rising from the presence of four Commer brothers aboard his ship, Jack finds himself battling Martian insurgents armed with shatterguns and telekinetic Amplified Thought. Then Jack compromises the entire mission when he falls in love with the Martian emperor's beautiful brainwashed consort.