When the automatic food preparer malfunctions, Jane Jetson tests a used robot maid on the night George brings his boss home to dinner.

Jane and the kids want a dog for personal protection, George doesn't believe in that but wants to keep everyone happy. To George the answer is an apartment approved electronic dog, one of those nuclear powered trouble free dogs: Electronimo! At the same moment the rest of the family found a biological dog. A contest should point out the superior dog. Astro proves to be the superior dog when he unwittingly tackles a burglar terrorizing the apartment building.

George Jetson and his boss Cosmo Spacely attend a robot football game. George fools his wife into thinking he's working late so that he won't be able to attend a PTA meeting.

Jane decides to enter the Miss Solar System contest without George knowing. However, Spacely Sprockets is sponsoring the contest. George & Mr. Spacely are judges, but Mrs. Spacely removes her husband from the judges' stand & George is the ""Mystery Judge"".

A bad sneaky student switches Elroy's report tape with his own, which consists of 4 D's, a "F", and a "H", but Elroy's family doesn't believe him so he runs away with Astro and gets mixed up with a mob who's robbing a bank.

During a school field trip to a remote asteroid, Elroy finds an odd pink rock, which turns out to be an egg that hatches into Orbitty, a spring-legged creature.

Elroy invents an evolution machine. By mistake his evolutes Astro by 10,000 years, increasing his I.Q. by 4000 points. George bets everything he owns by playing chess with a little help of Astro. At that moment Astro is caught by the dogcatcher. When that doesn't work he enters a brainy game show where the contestants can win millions.