The story follows the Grinch, who hates Christmas and the joy it brings to the people of Whoville. So, he plans to steal everything related to Christmas to stop the celebration. However, he discovers that Christmas isn't just about material things and his heart grows.
In How the Grinch Stole Christmas, the Grinch, out of his dislike for the festive season, plots to take away Christmas from the Whos. But, as the story unfolds, he finds that the spirit of Christmas can't be stolen and he transforms for the better.