Dorie, Reanne, and Mirabelle invite a mysterious weak old man in from the cold of winter to the warmth of The DoReMi Magic Shop. The girls must keep their Witchling identities a secret, but when the old man catches sight of Patina, all believe their cover’s blown! Strangely enough, the old man seems to know about Greenlings and Patina in return, knows the man by name - it seems the old man is Santa Claus! And Santa's in a world of trouble! He's come down with a cold on the most important night of the year - Christmas Eve! Dorie, Reanne, and Mirabelle team up with fellow Witchling, Ellie, and use their combined Witchling powers to save Santa!