In a South Yorkshire city, Ryan Sinclair, Yasmin Khan and Graham O'Brien are about to have their lives changed forever, as a mysterious woman, unable to remember her own name, falls from the night sky.
Still reeling from their first encounter, can the Doctor and her new friends stay alive long enough, in a hostile alien environment, to solve the mystery of Desolation? And just who are Angstrom and Epzo?
Montgomery, Alabama, 1955. The Doctor and her friends find themselves in the Deep South of America. As they encounter a seamstress by the name of Rosa Parks, they begin to wonder whether someone is attempting to change history.
Injured and stranded in the wilds of a far-flung galaxy, The Doctor, Yaz, Graham, and Ryan must band together with a group of strangers to survive against one of the universe's most deadly - and unusual - creatures.
Arriving in 17th Century Lancashire, the TARDIS team become embroiled in a witch trial. With the arrival of King James I, the hunt for witches intensifies. However, could something more dangerous be at play? Can the Doctor, Graham, Yaz and Ryan keep the populace of Bilehurst Cragg safe from the forces surrounding the land?
On the edge of a Norwegian fjord, in the present day, The Doctor, Ryan, Graham and Yaz discover a boarded-up cottage and a girl named Hanne in need of their help. What has happened here? What monster lurks in the woods around the cottage - and beyond?
Answering nine separate distress calls, the Doctor and team arrive on the remnants of a brutal battlefield on the planet Ranskoor Av Kolos. This planet has many secrets. An amnesiac commander? Mysterious mists? Who or what are the Ux? A deadly reckoning awaits the Doctor and team once they have the answers....
As the New Year begins, a terrifying evil is stirring from across the centuries of Earth's history. As the Doctor, Ryan, Graham and Yaz return home, will they be able to overcome the threat to planet Earth?