喰种Calvin Carter, a successful business executive, has it all, but neglects those closest to him. On Christmas Eve, all that changes when the sign on his office building falls on him. He awakes in a hospital bed, attended to by Angie, a nurse who soon lets him know he has 12 days (12 chances) to get his act together and achieve the "perfect" Christmas Eve. If he doesn't, there will be dire consequences.