Marty and Doc head to Ancient Rome, unaware Jules and Verne are joining them. While the boys cause trouble, Marty gets mixed up in a chariot race with Bifficus and Doc gets thrown to the lions.
Donatello decides to create a clone of himself so that he can spend more time on his inventions while his clone spends more time fixing things around the Lair. Donny tests his latest invention on a sewer rat and accidentally gets his hand in the way, causing the rat clone to talk just like Donatello.
Baxter Fly is back, and this time he has assembled an army of flies to infest the city, endangering millions just so Stockman can get to Shredder.
A day at the beach gets turned upside down when the gang has to feal with attacks from sea creatures. In comes Neptunia, whom is sick of the pollution that is dumped in the sea and caused her to mutate. She plans revenge by flooding the city of St. Canard!
The N-Team is on Baseball World, playing a game against Bo Jackson and the VideoLand All-Stars. Suddenly, Mother Brain opens a warp to the cellar of Baseball World, and all but Lana and Game Boy are sent through. In the cellar, the good guys can't agree which way to go to get out. They split up and go two different ways. At the Palace of Power, Mother Brain takes control and assigns Princess Lana to cleaning duty. Lana and Game Boy manage to get into the Communications room, and Lana contacts Kevin and the others in the cellar. She opens up a warp for them. After being in a confrontation with the Baseball Card King and evil baseball equipment, Kevin and the rest of the group go through a warp to the Palace. At the Palace, King Hippo and Eggplant Wizard present Mother Brain with a huge cake and a crown. A warp opens in the ceiling, and the good guys land on the cake. The cake moves to Mother Brain, King Hippo, and Eggplant Wizard and forces them up through the warp to the cellar of Base
King Koopa goes into the fast food business and his food is a hit with everyone in Dome City, except for the Princess. But no one knows that Koopa sneaked in a side effect for those who eat his Egg Scoopa Koopa sandwiches, turning them into Chickadactyls. Only Mario and the Princess remain unchanged so it's up to them to stop Koopa.
After spending all day curing Lydia of her measles, Beetlejuice gets Cabin Fever--and then is quarantined to the Roadhouse. How can Lydia help BJ get over Cabin Fever if they can't go outside? They'll think of something!
Laura's behavior suddenly changes when she meets Carl's younger new partner and surf's up for Steve.
King Ferdinand of Mypos comes to visit America and dies in Larry's arms - which means that Larry is the new king according to Myposian custom. But convinced that Larry would make a terrible king, they must pretend that he's alive and drop him into the arms of the King's advisor - The Speaker of the Hut.
Matlock goes back to his hometown for a family reunion, but things turn sticky when a good friend of his nephew's son dies, and his rival is charged with murder. Not only that, but the whole town seems to hate Matlock, as many of them believe he thinks he's better than them because he's a big city lawyer.
Frank's in a lather: J.T. doesn't seem cut out for carpentry, but he bubbles as Carol's shampoo boy.
Three old men from Yorkshire who have never grown up face the trials of their fellow town citizens and everyday life and stay young by reminiscing about the days of their youth and attempting feats not common to the elderly.
Comet Guy, failure superhero has come from another planet to retrieve superhero training. Steelbeak directs the theft of masses of rubber to construct a destructive F.O.W.L. device - the F.O.W.L. ball.
Van Owen elicits emotional testimony from Elsa Chandler; the Government's handling of the MIA issue following the Vietnam War comes under fire in a family feud over a presumed-dead Air Force captain.
Homer's averting of a nuclear meltdown earns him employee-of-the-month honors--and a call from Magic Johnson; Milhouse's parents prohibit him from playing with Bart.
Brandon submits one of Andrea's articles to a high school journalism contest. She wins the contest, but panics because a school district representative wants to conduct a home interview. Andrea asks her grandmother to say that she lives with her, but Rose does not want to play along. The school district initiates an investigation because they suspect that Andrea lives out of district. Andrea moves in with Rose, but decides to give up her fight because she cannot stand to be in the middle of the long-running feud between her parents and grandmother. Rose decides to let Andrea stay and agrees to talk to her daughter-in-law. Steve gets a girlfriend through a ""chance encounter"" at the Peach Pit, but Kelly suspects that the girl is only interested in his bank account. Music: ""Radio Song"" by R.E.M. featuring KRS-One; ""I'll Turn to Stone"" by The Four Tops; ""Shiny Happy People"" by R.E.M. featuring Kate Pierson (#10, 1991); ""Losing My Religion"" by R.E.M.
Cliff's girlfriend and mother take an instant liking to each other while Rebecca tries to entice Sam into some frozen fertility underwear.
Anxious to see a famous rapper, Rudy and her friends lie to their parents in order to get into a club for 16 year olds and up. Cliff and Clair secretly send Pam, Lance and Charmaine to keep an eye on them.