A bounty hunter known as Captain Bragg comes to Third Earth to help the Thundercats get rid of the Mutants and the Lunatacks. Capt Bragg tricks Wilykat in going with him and they first go after the Mutants. After capturing them, they go to capture the Lunataks. They capture all except Luna and Amuk, who free the other Lunataks, put Bragg in a cage and tie Wilykat to the train's engine. Lion-O and Wilykit arrive to save Wilykat and the Lunataks are defeated. All the Mutants and all the Lunataks are captured and exiled.
Mumm-Ra discovers the power of one of the pieces of the treasure of Thundera. The Double-Headed Dragon of Doom, or the Jade Dragon possess the power to entrap people in its stomach. The legend says that Haji-Man's ancestor gave the dragon to his wife as a marriage gift, and since her father was so against their marriage, he put a curse on the dragon and it engulfed Haji-man's ancestor. Jaga freed the him, and he gave the dragon to Jaga for safe keeping. Now, the Thundercats have found the Jade Dragon, and Mumm-Ra manages to trap Lion-O and Cheetara in it. Haji-man is their only hope.
Back visiting their old wreckage site, Lion-O and Snarf stumble upon the Thunder-scope, a legendary thunderian telescope that locates lost thunderians, and their belongings. Mumm-Ra, interested in the Thunder-scope so he could find the treasure of thundera, ambushes Lion-O. He actually kills him in this scene. Before Lion-O dies, he manages to take out a lens from the Thunder-scope so Mumm-Ra could not completely use it. Jaga appears to Snarf, and Lion-O's dead body, and revives him. Mumm-Ra comes back for the missing piece, and Lion-O has to stop him.
A wrinkle in time takes the crew 3 million years into the past, before the radiation leak killed everyone aboard except Lister.
Brian befriends a prehistoric caveman who was frozen in ice since the Ice Age. This spark interest from the Crooks since the caveman bears a striking resemblance to Berserko and is believed by the crooks to be Berserko's direct ancestor.
Lion-O, Panthro, and Snarf set out to look for more pieces of the Treasure of Thundera, and Mumm-Ra sets a trap for them. He freezes them in the caverns of cold on Thundera. Meanwhile, back on third earth, the Luna-tacs, in need of another source of power for their ship, use exercise machines to power it up. They capture the other Thundercats and force them to workout on the machines to power up the ship. The Thundercats manage to overwork the power supply, and escape from Sky Tomb. Back in the caverns, Snarf manages to get the sword of omens to Lion-O with his tail, and they escape and return to third earth.
One of nature’s perfect creations -- the misty, splashing waterfall -- is painted by Bob Ross, in all its magnificent splendor.
At the Scooby Snack factory, where Scooby's food is being made a strange accident occurs at the cheese lab. The workers are all chased away by a strange cheese creature demanding that Scooby Snacks stop being made.
Garfield plays in a cardboard box, imagining himself driving a race car and flying an airplane. When Odie joins, he and Garfield imagine themselves stranded in the ocean.
Roy takes advantage of Orson's overactive imagination to pretend that Earth is being invaded by aliens that resemble cheese danishes. While most of the farm panics, Lanolin investigates Roy's prank.
After Garfield is mean to Nermal, Jon sends him to a strict obedience school, where he is treated as a prisoner.
A woman tries to get her Uncle Edgar committed, believing that he is senile. The investigating doctor finds Edgar living in an apartment containing all kinds of junk. Edgar claims that a mysterious Voice tells him what junk to collect, and to assemble it into a device that constantly keeps the world in balance. The doctor has him committed, only to realize when a small Pacific island is destroyed as Edgar predicted that the "insane" man is anything but. The doctor has Edgar released, only to discover that he has been chosen to replace Edgar as the new "balancer" of the world.
The babies bulid Nanny a ""picture box"" with a fairy tale scene, and each babie pretends to be a character.
A ghost of a Gummi knight leads Cubbi on a quest.
Dave meets a woman he really feels a strong connection with. At first the boys disagree, but finds she can get along with all of them. The only thing preventing this relationship to work is her own three boys clashing with the Chipmunks.
Having blown the safe in Lieutenant Gruber's bedroom, René and Leclerc are surprised by its contents. The Communist Resistance lies in wait for their escape, and holds them hostage in a sawmill.
Pee-wee has to eat his words when he tells the gang how important dental hygiene is and, then, develops an ow-some toothache! Since Jambi is taking a head-turning vacation at Mount Rushmore, Pee-Wee is forced to face his greatest fear - the dentist! He's so afraid, it'll take Miss Yvonne's coaxing just to get him to go. When he finally does make "it," Pee-wee learns that visiting the dentist is nothing to grit his teeth over and can actually be fun.