Here's my idea:
The Fraggle Five will go on an adventure in Outer Space exploring things they haven't even seen, those human same old stuff. But meanwhile, they will encounter a group of Frackles, who are searching for a mysterious Human World treasure, and the Fraggles and Frackles made a deal: whoever find the treasure first, gets Fraggle Rock, Fraggles either get it back or lose it, which the Frackles might take over as "FRACKLE ROCK". One day, the Frackles would find it first, and the Fraggle Five have to steal the treasure, or else they'll never have Fraggle Rock again, and as "Frackle Rock" the other Fraggles are in jail. And the Fraggle Five is their only hope. And of course, in the end, the Frackles lose their cave, and they get caught by Rustling Humans.
THE MAIN VILLAINS:
Globo Frackle (spoof on Gobo Fraggle)
Boombley Frackle (spoof on Wembley Fraggle)
Doober Frackle (spoof on Boober Fraggle)
Dred Frackle (spoof on Red Fraggle)
Nokey Frackle (spoof on Mokey Fraggle)