圣诞 5343 年，一艘坠毁的飞船发来了一封紧急求救的信息。博士赶到后，发现求救信息来自宋江，她要 Doctor 拯救她的丈夫 —— King Hydroflax 。被卷入这场宇宙阴谋的博士发现宋江竟然不认识他，而他极力避免的那一天终于不可挽回地到来了，宋江与博士会有一个 Happy Ending 吗？...

Join the Doctor, as he teams up with an investigative journalist, and a superhero to save New York from a deadly alien threat....

The Doctor and Clara face their Last Christmas. Trapped on an Arctic base, under attack from terrifying creatures, who are you going to call? Santa Claus!...