In this installment, Sam's life takes an unexpected turn when a talking dog named Oscar arrives on his doorstep. Oscar, who has a penchant for witty commentary, finds himself unusually speechless upon the arrival of a new neighbor: Carmen, a pampered cat with a knack for causing trouble. Her presence, along with that of her owner, Mrs. Bentley-Wallop, makes Oscar's life more challenging. However, things take a more serious turn when a jewel thief strikes the neighborhood. Sam and Oscar decide to take matters into their own paws and embark on a detective mission to catch the culprit.