Lady and Tramp's mischievous pup, Scamp, gets fed up with rules and restrictions imposed on him by life in a family, and longs for a wild and free lifestyle. He runs away from home and into the streets where he joins a pack of stray dogs known as the "Junkyard Dogs." Buster, the pack's leader, takes an instant disliking to the "house-dog" and considers him a rival. Angel, a junkyard pup Scamp's age, longs for the safety and comfort of life in a family and the two become instant companions. Will Scamp choose the wild and free life of a stray or the unconditional love of his family?

Lady, a golden cocker spaniel, meets up with a mongrel dog who calls himself the Tramp. He is obviously from the wrong side of town, but happenings at Lady's home make her decide to travel with him for a while.