Tom gets Spike sent to obedience school for being naughty, and Jerry is left without a protector. When Spike returns, Tom tries hard to get Spike to revert to his old ways. Jerry fights back to make sure that Spike keeps his cool.
Dr. Bigby upgrades his robot to be “The future of home security,” but when Tom invades the lab to pursue Jerry and Napoleon, the robot has some tricks up its sleeves which will lead the robot into hysteria.
Tom is assigned to guard his owner’s garden of crops against pests, including Jerry and a clan of harvest mice who all resemble him (albeit with different-colored bandanas).
When Hildie gets a magic mirror that predicts the future, Tom sees predictions of himself being fed a fish, which is good, and then a bad prediction: switching heads with Beatie.
Tom works at a zoo run by Spike, who orders him never to feed the zoo’s animals (only Spike can) or else he will have his badge. However, Jerry inadvertently and constantly causes trouble by framing Tom while he tries to prevent Jerry from feeding them.
Little Quacker enlists Jerry’s help in getting his cracked favorite birdbath fixed, but they get distracted by the smell of Tom’s delicious Chinese takeout. After fighting over the food, Tom steals Little Quacker’s fortune cookie and gets the kind of fortune he deserves.
When he tries out a new cheese-in-a-can that Rick and Ginger buy, Tom has a crazy day when he experiences hallucinations based on the show’s other scenarios.
When Tom ruins Hildie and Beatie’s potions, they get fed up with him and he overhears them wanting a black cat instead of him. He makes and drinks a potion that turns him into a black cat, and they assume he’s another cat.
While celebrating the holidays with Beatie and Hildie, Tom and Jerry destroy their Christmas tree and must go out to obtain a new one. In the process, they help out Santa Claus by delivering presents for Christmas.
An unlucky dog named Dutch goes to Detectives Tom and Jerry, saying that a ruby stone he has been guarding from his great grandfather’s master pirate “Captain Wrongway Weston” is taken from a female dog named Roxy, who is also unlucky.
