Max the Dog narrates the tale of the Grinch, a grumpy creature with a heart “two sizes too small,” who despises the holiday joy of Whoville. Fed up with the Whos’ Christmas celebrations, he disguises himself as Santa, sneaks into their homes, and steals their decorations, food, and gifts. On Christmas morning, instead of mourning, the Whos gather to sing joyfully. Touched by their spirit, the Grinch realizes that Christmas is about more than presents. His heart grows, he returns everything, and joins the community, transformed and full of holiday cheer.