Scientist Ralph Gain invents a machine that can evolve animal subjects. His hoodlum friend, Johnny Farrel, accidentally kills him and uses the machine on himself, running up the evolutionary ladder until he finds himself devolved into a gorilla's form. He tries to convinced authorities that he is Gain but he slowly loses his mind and becomes a gorilla in thought as well as form.; In the far future, E-semex conceives a plan to defeat the Vegan invaders by warning people in the past.; In the year 8685, mankind is ruled by a supreme machine that provides for their every need. After a meeting with a Neo girl, Athon discovers that the rule of the Machine is not so benevolent and works to destroy it.; A hoax goes awry and Bruce Karson accidentally journeys to Venus, only to be accused of staging a hoax on his return.; A robot wins $500 in a wrestling contest but wants his winnings in gasoline.; Brainstorm travels to 1,000,000 BC to get proof that his time machine works.