After hearing reports of deadly attacks in the Upsilon Scorpii system, the Galactic Seven rush to investigate. They soon hear rumors that the attacks were carried out by a group of mythical creatures called the Lesathians. But when the Galactic Seven come face to face with them, they learn that they are not only real; they are savagely real. The Lesathians seem to come from the very depths of hell. They have evil, penetrating red eyes, multiple-hooked limbs, and faces that would frighten the Devil himself. They also appear to have an eerie, almost telekinetic ability to communicate with each other. With the odds against them, and an old friend helping, the Galactic Seven must find a way to stop the Lesathians before they take over the rest of the galaxy.

When an out-of-work college graduate is hired by a secret organization to head its computer department, the young man quickly discovers that the organization is literally out of this world! The Galactic Seven is a space-traveling special forces corps devoted to promoting peace throughout the galaxy and fighting evil forces that threaten the universe. But as war erupts between the benign Rigellians and the diabolical overlord Lotrell, our hero wonders if his first mission with the Galactic Seven will be his last!