Inside a snowflake, high atop Mt. Crumpit, just north of town, a certain cave-dwelling curmudgeon peers down on the Christmas-adoring Whos of Whoville as they make their frantic Yuletide preparations. And this isn’t your run-of-the-mill sourpuss. This is the Grinch (Jim Carrey), and he is positively sick of those nog-sucking cheermongers. Christmas is back and the Grinch plans to do something about this annoyingly-happy holiday … once and for all.

Until he encounters little Cindy Lou Who (Taylor Momsen) who takes matters into her own hands, trying to find out everything she can about the Grinch: Who he is, why he doesn’t like Christmas and why he is held in such utter contempt. Her innocent questions turn Whoville upside down, but ultimately, these two kindred spirits-one searching for just one thing meaningful from the yuletide holiday, and the other unearthing a part of his soul long ago buried and forgotten-will come together, and collectively learn the true meaning of Christmas.