The adventure begins when the loving owners of bulldog Chance (voiced by Michael J. Fox), Himalayan cat Sassy (voiced by Sally Field), and Golden Retriever Shadow (voiced by Don Ameche) are forced to leave them in the temporary care of a friend who lives hundreds of miles away. But after several days, the worried animals begin to think their family must be in trouble, so they decide to head for home. On their incredible journey across the ruggedly beautiful Sierras, they encounter unexpected surprises from man, beast, and nature alike.