Detectives Tom and Jerry are hired by Polly the Dog to get back her collar from mean Barkley at the park. After a series of incidents involving the pound “jail” and an electric fence, Barkley reforms when he meets Polly and falls in love with her.
Ginger gets a high-tech mattress and Tom is forbidden to sleep on it, but when Butch sees it and tries it out, it results in him, Tom, and Jerry fighting over the bed.
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.
After the plane incident, Rick and Ginger sneak Tom and Spike at “Paradise Resort” where pets are not allowed, but when Rick and Ginger leave Tom and Spike in their room, Jerry and Tuffy cause them trouble.
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.
A sequel to Pecos Pest (1955), Jerry’s uncle, Pecos Pest, returns to Tom and Jerry’s house for a visit, where he constantly sings and plays on his guitar, annoying and keeping both Tom and Jerry awake.