Two separate alien incursions in a South Yorkshire city collide, and Ryan Sinclair, Yasmin Khan, and Graham O'Brien have their lives turned upside down when the newest regeneration of the Doctor -- unable to remember her own name -- falls from the night sky.
The Doctor and her new friends fall in with a pair of ship pilots on a race across the universe, joining the last leg of the race on a barren and hostile alien planet called Desolation.
The TARDIS brings the Doctor and her companions to segregated Montgomery, Alabama, in the 1950s, where they discover that the future civil rights champion Rosa Parks is the target of a plot to change the course of history.
After returning her companions home to Sheffield the Doctor discovers an outbreak of unusually large spiders threatening the city. When Yaz goes to help her mother at work, she discovers that the city's brand new luxury hotel is at the center of the crisis.
The Doctor and her friends find themselves on board a hospital ship in deep space with a group of strangers, which is infiltrated by a cunning and ravenous little creature.
Yaz convinces the Doctor to take them to the Punjab, India, in 1947 -- where she meets her grandmother on the eve of a bloody conflict. But it soon becomes clear that aliens are also in the borderlands.
After the Doctor receives a delivery the team answers a call for help from an employee inside Kerblam!, the galaxy's largest retail company, taking jobs inside the gigantic warehouse ... where human resources are supervised by cheerful robots.
In 17th-century Lancashire the Doctor and her friends find themselves in the middle of a witch trial, and try to stop the local landowner from her hunt. But matters are complicated when King James I himself turns up to help extinguish witches from the land.
In present-day Norway the group finds a blind girl alone in a remote cottage -- with a missing father, a monster on the prowl, and a portal to another world.
The Doctor and her companions answer a series of urgent distress calls from a mysterious world, where a pair of religious worshipers seek to defend their Creator, a salvage commander has lost his memory -- and an old foe threatens the lives of his crew.
