BBC has finally released the teaser trailer for season 13 of “Doctor Who.”

Season 13 marks the final season in which Jodie Whittaker will star as the Doctor.

She will appear alongside previous companion Yaz (Mandip Gill) and new companion Dan (John Bishop).

Previous companions Ryan Sinclair (Tosin Cole) and Graham O’Brien (Bradley Walsh) will not be returning.

“Game of Thrones” actor Jacob Anderson, who played Grey Worm on the HBO series, will also appear as a new character called Vinder.

Due to the difficulty of filming under COVID-19 protocols, this season will only have eight episodes.

Each of the 8 episodes will fit together into one unified story that has the Doctor taking on the “Flux.”

In the teaser, the Doctor teases facing down, “the Sontarans, Weeping Angels, creatures known as the Ravages, and enemies from across the universe.”

Season 13 of “Doctor Who” begins on October 31, 2021.