After Mystery Inc was sent into the far future by the Great Gazoo, the end up in the home of the Jetsons : specifically on George Jetsons treadmill. George advised them to get off of the treadmill by stop running. The gang stopped running, and was slammed into the wall behind the treadmill. After they recover, they are introduced to the rest of the Jetson family: Elroy , Judy , Jane , and their dog Astro . They are also introduced to the technology of the future, specifically the robots: Rosie and Elroy's robot . They relate their tales from their last adventure with the Flintstones , but aren't believed. After all, time machines were just science fiction.
Just then, George is called by his boss, Cosmo Spacely , who calls him to work. They all take the Jetsons' flying car to his work, and meet Spacely, who doesn't believe in ghosts. Just then, the Space-Age Specter appears, which causes everyone to scatter in fear. The Specter quickly disappears, leaving everyone scared. Spacely promises that everything at his, and his company's disposal would be used to help Mystery Inc get home. Suddenly. Spacely's rival Mr. Cogswell appears, who wants Spacely to sell him his company. Spacely asks the Scooby Gang to find the Specter, while he orders George back to work on Project X. However, before anything else could happen, the Space-Age Specter reappears. Fred leads the specter in a chase, and leads him onto the treadmill. It flies back and hits the wall, revealing a robot: Elroy's robot to be exact. Elroy wanted the robot to scare everyone from George's office, leading for him. to be home more often.
Touched, Spacely promotes George to Vice President of his company, and leads the gang to see if they could help with Project X, which was a caveman-era object that nobody could recognize. Mystery Inc recognized it as Professor Alfred Einstone's time machine . Shaggy then tripped over a cowering Scooby, bumping into Astro, who bumps into George, who accidently activates the machine. Mystery Inc is zapped, sending then exactly to where - and when - they were when they were originally zapped into the past.
- George Jetson (single appearance)
- Elroy Jetson (single appearance)
- Judy Jetson (single appearance)
- Jane Jetson (single appearance)
- Astro (single appearance)
- Rosie (single appearance)
- Cosmo Spacely (single appearance)
- Mr. Cogswell (single appearance)
- Space-Age Specter (single appearance)(disguises of Elroy's robot)
- Elroy Jetson's remote-controlled robot (only appearance; destroyed)
- Grumpy Ghost of Grizzly Grotto (final time mentioned)
- Dino (flashback only)(no lines)(cameo)
- Fred Flintstone (flashback only)(no lines)(cameo)
- Wilma Flintstone (flashback only)(no lines)(cameo)
- Barney Rubble (flashback only)(no lines)(cameo)
- Betty Rubble (flashback only)(no lines)(cameo)
- Professor Alfred Einstone (mentioned)
- Hamstersaurus (final appearance)(no lines)
- Police officer (single appearance)
- Space Age
- Stone Age
- Bedrock (flashback only)
- Modern Age
- Grizzly Grotto (mentioned)
- Jetson flying car
|Mr. Cogswell||To put his long-standing rival, Mr. Spacely, out of business.|
|Elroy Jetson controlling robot as the Space-Age Specter||He was feeling neglected at home after his dad was spending too much time at the office.|
- The gang were sent into the Space Age from the Stone Age in the previous story, Scooby-Doo, When Are You?
The following credits try to match how they are displayed in the comic as much as possible:
- Writer: Sholly Fisch
- Artist: Scott Jeralds
- Colorist: Wendy Broome
- Letterer: Saida Temofonte
- Cover artists: Dario Brizuela with Franco Riesco
- Assistant editor: Jessica Chen
- Editor: Kristy Quinn
- This story marks the first appearance of the Jetsons characters (besides George and Astro, who cameoed at the end of the previous issue's story) in a comic book since the cancellation of The Flintstones and the Jetsons sixteen years earlier.
- Elroy also appeared in Marvel Comics' Laff-a-Lympics #11 story The Toys from Tomorrow, featuring Scooby & Shaggy, who Elroy had minimal interaction with.
- Jane notes that Astro and Scooby sound alike; this is because they were both voiced by Don Messick in their respective cartoons.
- Alfred Einstone is a prehistoric parody of Albert Einstein.
- None known.
Inconsistencies/continuity errors and/or goofs/oddities
- Cartoon characters have a seemingly perpetual life-span, but no living being would still survive beyond the Stone Age like the hamstersaurus did. Unless they the used time machine to send themselves into the future.
- George mentions that there are no time machines in his family's time. However, George used time machines in Gold Key Comics' The Jetsons #19 and Marvel Comics' The Flintstones #4 and Laff-a-Lympics #11. Also, Elroy built a time machine in the made-for-TV movie The Jetsons Meet the Flintstones.
- When the gang eventually get to the present, the Grumpy Ghost of Grizzly Grotto isn't actually on any of the panels, and neither of the two men with the police officer seem to be the Grumpy Ghost either.