After McCoy's shuttle was damaged in an explosion, he crashed on Epsilon Calisco 3, Planet 4562. His command had declared him killed on duty. He lived alone for three months on what the planet and an unknown benefactor provided. On the return from an extended exploration of the area around his cave home, he discovered people who were under attack from tall dirty humans, the Meerdol. His rescue and healing of the injured Acara and Baylem of the Hapai race of natives, the revealing of McCoy's benefactor as the changeling Eyen, the Noble Wolf, and forming a unique fighting force of native kindreds to defend against the Meerdol horde. When the Meerdol were defeated, McCoy, Eyen, Kayla returned to the ancient facility where the technology was found. Olcar, the facility's AI, helped McCoy develop satellites to monitor earth transmissions. This eventually resulted in learning Earth was on the verge of being invaded by an unknown race. After building an ideal war ship, McCoy, Eyen, Kayla along with Olcar as the ship's AI, traveled to Earth to offer their help. This is the story of that adventure."