Heathcliff knows he is the best cat around! Never have we seen such self-confidence topped off with a heavy dose of vanity, cunning, ruthlessness, and a mischievous love of gags. He cruises and struts down the street and watch out any person, cat, or dog who gets in his way! Although he may terrorize the neighborhood, let an outsider try to push anyone around and he is a veritable tiger of defense. On the other side of town are The Catillac Cats, which typically revolve around leader Riff-Raff's get-rich-quick schemes or searches for food.
Heathcliff hears Iggy saying how wonderful it is to have a pet, and decides he should have a pet too. He tries out Spike and Mungo, but they do not make good pets at all. He frees a live lobster from the fish store which makes a great pet until the lobster begs to go home to the ocean and Heathcliff generously complies.
Wordsworth is convinced he has a rare cat disease which Riff Raff read about in the paper, so the gang take him to a cat witch-doctor who tells them the only cure is an alligator hair. The cats risk their lives in a swamp before returning to tell the doc that alligators don't have hair. No matter, Wordsworth seems better.
Grandpa takes Iggy to the country club where Grandma challenges Grandpa to a game. Meanwhile, Heathcliff's quarrel with the mice causes chaos in the dining room.
Riff Raff and the cats watch a horror movie, and that night Riff Raff dreams he is Dr. Frankencat and has created a monster. It's a regular nightmare, with even Leroy showing up as the Wolfman. Riff Raff wakes up screaming for help, and glad it was all a dream.
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.
