A mysterious, ancient comet is due to sweep back into known space, and legends report that it contains a spectacular source of inexhaustible energy. Galactus and Thanos each seek this power source, and each enlists an agent to find and recover it: Galactus recruits the Silver Surfer, who agrees knowing that the power source is better off in Galactus’s hands than not; while Thanos (preferring to avoid unwelcome attention) hires a famous bounty hunter called the White Raven, who agrees because the price is right.
Other interested parties emerge as well: the Surfer battles off a Kree warship who seeks the power to re-establish their empire, while White Raven single-handedly destroys a Skrull ship also seeking the comet. The Surfer and the Raven, independently of each other, penetrate inside the comet, which proves to encase a vast, sprawling technological wonderland, constructed by an ancient, now-extinct alien civilization
