In Albert Payson Terhune's heartwarming tale, Link Ferris discovers an injured collie on his way home one evening. Having no experience with dogs, Link nurses the animal back to health, and the two form a deep bond. Link names the collie Chum, and the dog becomes an indispensable part of his modest farm's daily operations. The story delves into the complexities of ownership and loyalty when Chum's original owners resurface, leaving Link torn between his love for the dog and his understanding of what is right.