New Year’s Eve. Sarah (Aisling Bea) is working - again. Nick (Adjani Salmon) is her only customer - again. Same old same old. Except this year, their countdown to midnight will be the strangest and deadliest they’ve ever known.

Why is an Executioner Dalek targeting these two people, in this place, on this night? Why are they having to live through the same moments again? Can the Doctor (Jodie Whittaker), Yaz (Mandip Gill) and Dan (John Bishop) save them and survive into the New Year?