Advent Calendar, Day Eleven

I apologise it's a bit late, but no worries, it's here now. I have a small synopsis of my 5-part Christmas Doctor Who story, which will be released over 5 days from 21st - 25th on the Advent Calendar. There's no title as of yet, but I'll come up with one sometime.

Holcroft is a life-long successful inventor and scientist, trusted by the whole world, but he's been plotting a winter apocalypse since his birth. The Doctor and Amy arrive on Christmas Day, 2030, to see the world as it's on the brink of an ice age. The duo must endure frozen bodies, alien technology and a group of villains bent on freezing the world, to save Christmas and the human race.