“Joy to the World” is the 2024 “Doctor Who” Christmas special episode. It’s available in the UK and Ireland on BBC channels and in many other countries on the Disney+ platform.

The Fifteenth Doctor (Ncuti Gatwa) arrives at a hotel in the year 4202 that offers access to different moments in history. He sees a strange man at the reception with a briefcase attached to him with a chain and becomes suspicious. He starts investigating with the help of security guard Trev (Joel Fry) but the briefcase is passed from person to person until a Silurian takes it to another hotel in 2024. The Doctor follows him and arrives at a room recently rented by Joy Almondo (Nicola Coughlan), much to the confusion of her and manager Anita (Stephanie de Whalley).