That's a very popular Christmas story. The Grinch is a fictional character who lives on the outskirts of town and hates Christmas. He decides to steal all the presents and decorations from the homes of the Whos down in Who-ville. But when he sees how sad they are, he realizes that Christmas is more than just presents and decorations. He brings back all the stolen items and joins in on the Christmas festivities. It's a heartwarming story about the power of kindness and forgiveness.