The Throne World was the center of the Empire, where the High-born made their home and Emperor Oran ruled all. James Keil was brought to the Throne World to entertain the High-born with his bullfighting skills. To them, he was a Wolfling, an amusing pet from beyond the Empire's fringes. But Keil had his own reason for being there--to discover the flaw in their invincibility and keep Earth free.