The basic plot revolved around a generic "evil" Professor Grimsby who wanted to remove laughter from the world so he could win a "Meanie" award. His solution (or, rather, his computer's solution) was capture all of the characters from the Sunday funnies because a lot of people laugh at them. (There are several flaws with this plan already, as you can guess.) The characters all get conned into a free cruise, and Grimsby captures them easily. The President then asks several adventure heroes from the funny pages to save them, but their plans backfire ending up with them getting captured as well. It's ultimately the children characters who convince Grimsby to let them go by getting him to laugh at himself. The all then escape the erupting volcano (what?!?) and the are all invited for a party at the White House.
The story is... mostly coherent, I guess? The internal logic falls apart repeatedly and, coupled with some really cheap animation (Hell, most of the backgrounds are little more than a single line between the floor and wall, if there's a background at all!) makes this eminently forgettable. But it is notable in that brought a large number of comic strip characters together in a single story, with many of those characters appearing in animated form for the first time!
Characters from the following comics made appearances...
- Barney Google and Snuffy Smith
- Beetle Bailey
- Bringing Up Father
- Flash Gordon
- Hi and Lois
- The Katzenjammer Kids
- Little Iodine
- The Little King
- Mandrake the Magician
- The Phantom
- Prince Valiant
- Steve Canyon
- Tim Tyler's Luck
I think my biggest curiosity is in the villain. Grimsby, as I said, was created for this cartoon, but his henchman is Brutus. I kind of understand Brutus being included since Popeye is given a heavy role in the story, but why create a new villain in Grimsby? I suppose someone like Ming the Merciless or Madame Lynx might have been thought to be too serious a villain to come up with such a ridiculous plot, but they couldn't pull out one decent antagonist from any of these strips?
There are probably any number of reasons why this hasn't been brought back to TV or made it to the home video market. At least we have the internet to give us a peak at weird curiosities like this...