Inside a snowflake exists the magical land of Whoville. In Whoville, live the Whos, an almost mutated sort of Munchkin-like people. All the Whos love Christmas, yet just outside of their beloved Whoville lives the Grinch. The Grinch is a nasty creature that hates Christmas, and plots to steal it away from the Whos, whom he equally abhors. Yet a small child, Cindy Lou Who, decides to try befriending the Grinch.

An abused beagle runs away from his owner. On the road, he meets young Marty Preston and follows him home. The boy immediately forms a bond with the dog and names him Shiloh. His stern father won’t let him keep the dog because it belongs to Judd Travers, a local hunter. After Shiloh is mistreated again, he runs away and returns to Marty. Knowing his father will once again make him bring Shiloh back to Judd, he makes a home for the dog in an old shed up the hill from the Prestons’ house and hides him from his family. His secret is soon discovered when a stray attacks the dog one night and he must turn to his father for help.