When four generations of the Cooper clan come together for their annual Christmas Eve celebration, a series of unexpected visitors and unlikely events turn the night upside down, leading them…

Little Billy witnesses his parents being brutally murdered by Santa. Years later, when he has to fill in for an absent in-store Santa Claus, his childhood trauma materializes once again.

Adam unexpectedly visits his family house at Christmas after a few years of working abroad. No family member knows about his secret plans and the real reasons of his visit.