Anderson H. Barkley, commonly going by Andy, is a stray German Shepherd/ Border Collie mix who has no true home. He travels by train, riding in boxcars without ever knowing where the train will take him. Despite never knowing where he's going, he is always up for adventure. When his train arrives in a town in Arizona, Andy meets a dachshund named Rocco who is neglected by his owners. Knowing he shouldn't be living like this, Andy helps Rocco out, and offers to take him along on his adventures. Together, these two friends travel around without ever knowing where they'll end up next, but knowing that if they face trouble, they'll face it together.