Fred Flintstone and George Jetson, both overworked and family-bound, learn more about each other when George's son Elroy builds a time machine. The family decides to test it, but Astro's mishandling sends them back to Prehistoric Days in Bedrock, where they meet the Flintstones. Fred and Wilma think the Jetsons are extraterrestrial beings, and George is introduced as Fred's cousin. However, the time machine accidentally transports the Flintstones to the future, forcing them to adapt to a robotic, automatic life. Meanwhile, Henry Orbit and Rosie build a new time machine, and Rosie embarks on a journey to find the Jetsons, encountering famous faces like Robin Hood along the way.

The Jetsons Meet the Flintstones
In this exciting adventure, a modern family is suddenly transported back in time to the Stone Age, where they encounter the iconic Flintstones and embark on a hilarious and action-packed journey.