Jack acts like a protective parent when his visiting mom has a night on the town with Dana's flamboyant father.
An inter-dimensional alien spacecraft leads Baxter Stockman to his latest vengeful plot to destroy the Turtles and Shredder.
It's Michelangelo's birthday, but none of his brothers seem to remember, and it frustrates him greatly. Meanwhile, Shredder and Krang discover what is possibly an "anti-mutagen" that, after testing it on three rock soldiers, can undo mutations. Shredder, Bebop and Rocksteady are sent to use it on the Turtles, and our heroes have a few close calls. Moth balls have never been so useful.
Harmony Unplugged: When Love-a-Lot suggests that Harmony perform a concert for Care-a-lot, Harmony’s inner diva comes out. Will she get her ego under control, or drive away all her friends before the big show? King of the Gobblebugs: The King of the Gobblebugs has been spotted in Care-a-Lot! Oopsy’s exaggerated story has sent the Care Bears into panic mode and Oopsy into some glue- will he get unstuck by telling the truth?
Mewser excitedly finds an old film canister in the attic. It's his favorite old movie serial "Dad Blasted Varmints" (oddly, featuring the cast of Twisted Whiskers playing wild west characters). Mewser forces his butler Smidgeon (and us) to watch as he supplies commentary. When Tiny Head learns that his beloved pet goldfish has two weeks to live, Tiny decides to make the fish's last wish come true and give him the best last day ever - only it isn't.
Marco hits a crossroads in his relationship with Fausto while Sonya squares off with Eleanor. Linder & Eva discuss their future. Frye & Adriana uncover a rift between agencies.
The Turtles try to stop Dregg's Techno Gang from stealing a Proton Accelerator, but due to Carter's interference, the aliens get away. Dregg needs the device to repair his Molecular Converter, but the Turtles need to expose Dregg's true intentions.
At the Consistory, Carafa announces King Ferrante of Naples is dead. The Cardinals debate the rightful ruler of Naples: Ferrante’s son, Prince Alfonso d’Aragona or King Charles of France. Cardinal della Rovere argues in favor of Charles, despite Rodrigo’s new ties to Alfonso. The Consistory concludes, as Della Rovere leaves to inform King Charles of Rodrigo’s plans to study both claims.
The newest virgin to join the show is Abby, who plans to have sex on Valentine's Day. Keyaira has Cauri over for a family dinner that goes off the rails. Alec dives into the dating world while John explores his dating options.
A bump on the head leaves Leonardo thinking that he is in 17th century France, and that he and his comrades are Musketeers.
Bebop and Rocksteady put on an act to get the Turtles to eat cookies, but not any ordinary cookies, because these cookies could turn them into humans! Tempted to find out what being a human is like, Michelangelo eats one and becomes one. While the effects wears off from time to time, they still kick back in. Meanwhile, the Turtles search for Michelangelo with an antidote for the anti-mutagen before it destroys him, while Shredder's two mutant goons ask for help from their old gang to rob a ship. And during it all, April attempts to "join" the gang to get a story for Burne.
ALF enters the art world after he earns praise for a still life made from food.
Constantine joins the Roman Army hoping to find Katherine, a friend missing since childhood. During his search, his triumphs in battle propel him to the pinnacle of power as Emperor of the Western Roman Empire. When Constantine discovers that Katherine is his rival's prisoner, he will stop at nothing—even an all-out war— to rescue her. Acting legend Peter O' Toole delivers his final film appearance in this powerful action-adventure.
Emperor Aleister of Malicuria comes to New York City, bringing along a shard of Lydium 90 to the USA. In order to get the mineral to fuel the Technodrome, Shredder invades the costume party thrown by the Malicurian US Embassy to kidnap Aleister's daughter, princess Mallory, but ends up capturing April in a fancy dress who looks just like Mallory.
The Turtles must clear their names when they are believed to be jewel thieves who stole a priceless emerald during a magic act run by a wizard named Boldini.
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