The spin-off movie showcases a unique plotline. Following a catastrophic global conflict, Deunan Knute and Briareos are freelancing as soldiers of fortune in the desolate metropolis of New York. Deunan yearns to locate the fabled high-tech haven called Olympus, but Briareos remains skeptical about its existence. Unexpectedly, they encounter a puzzling girl and her mechanical protector who assert that they have a vital assignment from Olympus and are running away from a band of elite cyborg mercenaries, determined to sabotage their task.