Santa Claus is the King of Forever, Land of the Immortals. When one special boy writes to Santa asking what no other child has ever asked, a miracle occurs: Santa and Mrs. Claus are blessed with a daughter. But the birth of Holly Claus also brings about a terrible curse from an evil soul named Herrikhan. Holly's heart is frozen, and the gates to Forever are locked, barring exit or entry.

As she grows into a beautiful and selfless young woman, Holly longs to break the spell that holds her people hostage. With four faithful and magical animal friends, she escapes to the wondrous world of Victorian New York, where she will face countless dangers, adventures, and a miracle all her own.