Noah can't believe his eyes - or his luck - when a magical gnome called Tommy turns up on the 24th of December. He's sure it's going to be AWESOME! But Tommy's spells keep going WRONG. The Christmas tree topples over, a gingerbread army goes on the attack, and a real-live reindeer is charging around the garden. Worst of all, Noah's parents are coming home soon - AARRRGHH! Can Noah fix Tommy's magical mischief in time to save Christmas?