A mind mannered cat named Henry wanders into the neighborhood who looks exactly like Heathcliff. When Spike thinks he has beaten up Heathcliff, Heathcliff catches on and joins forces with Henry to make Spike look like a fool. / Riff Raff and the Catillac Cats go camping in the woods and meet Big Foot who threatens their camp. They try to catch him for fame and fortune. In the end Big Foot gets away, but upon overhearing the boys tell their disappointment...

Heathcliff sneaks into the Van Corkingdale mansion to challenge Bruno, their ferocious guard dog, and determine who the real king of the neighborhood is. Inside, Heathcliff defeats Bruno, allowing burglars to raid the house! Later, when the some crooks attempt to burgle the Nutmeg home, Heathcliff traps them for the police, and returns all the previously stolen goods to the mansion. / Cousin Lucky comes to visit Riff Raff seeking help. It seems...

Iggy goes into a hospital to have his tonsils removed, and Heathcliff goes along - even though no pets were allowed. Heathcliff terrorizes the hospital in a very short time, and even gives a lecture posing as a visiting doctor. / Hector complains about Riff Raff's leadership of the Catillac Cats, so Riff Raff offers to let him take over. After a series of dumb decisions and blatant bungles, even Hector has to agree there is no leader for the gang...

Hector, Wordsworth and Mungo decide to teach Heathcliff a lesson after a typical day of being picked on. That night when Heathcliff is fast asleep, the cats sneak into his house, and with Hector dressed like a ghost, frighten Heathcliff into promising to be nice to his friends. After a few days of being good, Heathcliff finally catches on and puts his sneaky friends back in their place. / Riff Raff goes with Cleo to the museum to look at dinosaur...

A new cat tries to move in on Heathcliff's 'operation.' But Heathcliff quickly shows him who's boss. The angry new cat decides the only way to dispose of Heathcliff is to make it look like he's gone on a rampage, causing all sorts of trouble. Donning a cat costume that resembles Heathcliff, the villain terrorizes the neighborhood, causing even Grandpa and Grandma to turn against Heathcliff. But Heathcliff and Iggy spot the impostor and turn the...

Heathcliff gets an idea from reading Playcat Magazine that the town needs a fancy nightclub for cats. He sets out to construct one out of dog houses he has stolen from around the neighborhood. On opening night the place is packed when all the dogs arrive, demanding entry on the grounds that the club is built out of their houses. Heathcliff agrees, but once inside, the dogs and cats brawl until the walls collapse. / Leroy wants to meet this rich...

Marcy dresses Heathcliff in baby clothes and is pushing him down the street, when two crooks disguised as mother and child rob a jewelry store. The police confuse the duos and throw Heathcliff in jail! Undaunted, our courageous cat escapes his cell, apprehends the true offenders, and surfaces a hero. / Much to Riff Raff's dismay, his mother is coming to town to see the beautiful mansion he wrote her he lived in. Riff Raff, in a frantic attempt...

Heathcliff suffers a nasty bang on the head, which renders the "Devil Cat" side of his personality stunned and permits the "Angel Cat" side to take over. Suddenly Heathcliff is good as gold and begins performing numerous acts of kindness toward Spike. Spike in confused, but certainly willing to take advantage of the situation. He even puts on a show for the other animals to demonstrate his new ability to make Heathcliff do his bidding. However,...

The Nutmegs decide to have a family portrait taken - including Heathcliff. Every time the photographer tells the group to "say cheese," mice appear and Heathcliff dashes to catch them, leaving the studio a shambles in his wake. / An old dirt bike arrives in the junkyard and the cats fix it up to stage a little competition. A gang of tough cats arrives to challenge the Catillac Cats, but our heroes emerge the victors.

In order to get a date with Sonja, Heathcliff promises to baby-sit her little nephew, Eggbert, for the day. The precocious kitten runs Heathcliff so ragged, he doesn't have the strength to go out with Sonja that night. / Hector and Mungo become the guinea pigs in a mad scientist's experiment that has them changing like Dr. Heckyl and Mr. Nyde. When Riff Raff finds them and discovers that without the aid of his secret cheese formula the scientist...