"It is the year 2230 and science has triumphed over the baseness and depravity that caused the wars of the twenty-second century!" Dr. Mark Savant hears of human sacrifice incidents being permitted by the government of the planet of Genero. His assistant, Ventro, can't believe it any more than Mark. Mona suggests the Stellar Police could handle the issue, but Mark decides to go investigate in his Astro II spacecraft.