Here's the plot: Gulliver and his unexplainedly intelligent cat Igor started shrinking the world's people, and when the Super Friends tried to stop him, he shrank them too. He even got his cat involved:
Oh, the other thing about the first season of Super Friends is that it was an hour long. Which meant that in this episode, the stars of the show spent 40 f*****g minutes trapped in pickle jars and listening to a madman explain how a planet of two inch people would solve our food shortages and make our beaches less crowded. He wasn't completely batshit, though. He mentioned how he'd leave a few people regular size to drive tractors or whatever. What's weird is that the man who invented the world's 1,328th shrink ray didn't consider all the problems being two inches tall would cause. For example, chili is now served like the world's worst hot tub. A broken lock on a hamster cage is an extinction level event. And everyone's 14 inch dildo now just looks ridiculous.