WayupnorthinGreenlandlives12-year-oldLuciawithhermotherandherfather，whoisbestknownasFatherChristmas.LuciaisthefirstgirleverinSantaclassattheinternationalChristmasSchool.Onthedaythatthepresentmachineismeanttobestartedforthisyear'spresentproduction，Lucia'sbestfriend，thereindeerherderOscar，isaccusedofstealingKingWinter'smagicalcrystalthatfuelsthepresentmachine.Claudia，Lucia'smotherwhohaslongbeenwaryofthecrudeOscar，triestopreventLuciafromruiningherfuturecareerbydefendingtheseeminglyguiltyboy.ButLuciaisdeterminedtofightinjusticeandescapeswithOscartoprovehisinnocencebyfindingtherealthief.SoontheyarefacingthesecretbrotherhoodofTheGreyMonks，whohavesworntodestroythecrystalandendChristmasasweknowit.AndLuciarealizesthatthereismoreatstakethanshethought.LuciaandOscarhavetofightthebrotherhoodforthecrystalallthewayintothedangerous...