Buck, Wilma, and Twiki set off into deep space aboard the Searcher, a starship on a mission to find the lost tribes of Earth -- humans who fled to the stars after a nuclear holocaust that all but destroyed the planet. The Searcher encounters a severely-damaged spacecraft with one survivor, who tells them of a savage attack by a bird-man named Hawk. Searcher sets course for the planet where it is believed Hawk lives, and Buck soon becomes involved in a desperate battle of wits and piloting skills with Hawk. Hawk's mate, who was a passenger in Hawk's ship, is mortally wounded in the battle and Buck and Hawk form a shaky alliance to seek medical aid for her. Eventually, Hawk joins the crew of the Searcher, looking for others of his kind.

Buck, Wilma, and Twiki set off into deep space aboard the Searcher, a starship on a mission to find the lost tribes of Earth -- humans who fled to the stars after a nuclear holocaust that all but destroyed the planet. The Searcher encounters a severely-damaged spacecraft with one survivor, who tells them of a savage attack by a bird-man named Hawk. Searcher sets course for the planet where it is believed Hawk lives, and Buck soon becomes involved in a desperate battle of wits and piloting skills with Hawk. Hawk's mate, who was a passenger in Hawk's ship, is mortally wounded in the battle and Buck and Hawk form a shaky alliance to seek medical aid for her. Eventually, Hawk joins the crew of the Searcher, looking for others of his kind.

The Searcher rescues a gold-skinned boy from an escape capsule in an asteroid field. When the ship collides with one of the asteroids, the boy displays his powers of molecular alteration by rescuing Admiral Asimov from beneath a fallen girder. The boy assures the crew of the Searcher that, with the help of his companion, who is on a nearby planet, he can dislodge the ship from the asteroid. But when Buck and Hawk go to the planet to get the companion, they find that he is being held captive by a man who wants to use the boy's powers for his own greedy purposes.

Buck is ordered to explore a derelict spaceship that the Searcher encounters, and finds it filled with solar bombs and crewed by seven little men. They are escorted back to the Searcher and Admiral Asimov takes their ship in tow to a place where the bombs can be safely detonated. Assuming the little men can cause no real harm, Buck places them in the care of Wilma; but the little men have never seen a woman before and are intent on finding out what all of the "funny little bumps" are.