When 10-year-old Max mails his Christmas wish list to Santa, a single typo leads to an unexpected and chaotic twist. Instead of the jolly old man in red receiving the letter, a mischievous and wild-eyed Jack Black, playing a devilish imp, shows up to wreak havoc on the holiday season. With Christmas magic on the line, Max must team up with his quirky family and race against time to fix the mistake, stop the imp’s chaos, and ensure that Christmas isn’t ruined. Along the way, they learn the true meaning of the holidays, and maybe have a little fun, too.