In a world where people possess magical abilities, a young girl with the power to heal calls on the Creator to grant her the strength to save her sick grandmother. Instead she attracts a shapeshifter.

After witnessing his parents' brutal murder on Christmas Eve, Billy transforms into a Killer Santa, delivering a yearly spree of calculated, chilling violence. This year, his blood-soaked mission collides with love, as a young woman challenges him to confront his darkness.