When the Doctor returns to Gallifrey, he takes charge and then takes steps to rectify the one great error in his history... and threatens to create the Hybrid which the prophecies warn against.
The Doctor must face his greatest enemy--the Veil--if he hopes to find Gallifrey.
When the street artist Rigsy finds a number tattooed on his neck, he turns to the Doctor and Clara for help. The trail leads the trio to an alien world hidden in the heart of London.
Professor Rasmussen of the space station Le Verrier transmits an urgent video explaining the deteriorating situation that wiped out his crew.
After surviving the attack, the Doctor and Oswald make their way to London to find the Oswald Box. Meanwhile, Clara engages in a battle of wills with her counterpart to avoid giving away the Box's location.
The Zygon shapeshifters on Earth begin a revolution to live with their true forms... and plan to conquer the planet to achieve their goal.
The Doctor faces a new enemy: the Knightmare, an English highwayman in 1651 who has access to alien technology.
While the Doctor and Clara try to save a Viking village from the Mire, the Doctor fixates on a single village girl, Ashildr.
The Fisher King, stranded on Earth, sets in motion a desperate plan to survive: a plan that could impact the universe.
The Doctor and Clara try to help an underwater base apparently haunted by ghosts.
With Clara and Missy dead and the TARDIS destroyed, the Doctor is trapped on Skaro by his greatest enemies.
The Doctor has disappeared, and both Missy and Colony Sarff are looking for him. When planes freeze in the sky above modern-day Earth, UNIT calls on Clara to help in the search.