Pampered in a life of luxury, Lady, a cute little cocker spaniel, sees her world turned upside down when her loving owners have their first baby. When Aunt Sarah moves in with her devious felines to baby-sit, Lady finds herself being fitted for a muzzle! In her bid for freedom, Lady runs away from her owners and meets a charming dog-about-town named Tramp, unaware that an unlikely romance is about to form.