Santa can't complete his work at Christmas without Christmas Magic.  The Reindeer and Sleigh couldn't fly, he would be too portly to fit down chimneys and he wouldn't be able to fly around the world in one night.

Christmas Magic is made by the Christmas Fairies, it is their job to change Christmas Spirit into Christmas Magic. 

Santa is worried though that there isn't enough Christmas Spirit in the world and he sends the Christmas Fairies Ariana, Ella, Florence, Lilly and Sienna Rose on a special mission to gather Christmas Spirit.

Can they complete their mission in time to save Christmas?