The Doctor and Clara have to face their last ever Christmas - they find themselves trapped on a arctic base and under attack from terrifying creatures. They soon realise the only person who can save them is Santa Claus.
When a dinosaur materialises alongside the Houses of Parliament in Victorian London, the Doctor's old friends, the Paternoster Gang, are relieved when he arrives, seemingly to deal with the creature. However, they soon realise that the Doctor is the one in need of help; newly regenerated, extremely volatile and questioning his self-worth, this is a very different man to the one they last saw. The only person that may be able to help him is Clara, and she is still grappling with losing the Doctor she knew and loved.
A Dalek fleet surrounds a lone rebel ship, and only the Doctor can help them now.
The Doctor faces his greatest enemy and he needs Clara by his side. Confronted with a decision that could change the Daleks forever he is forced to examine his conscience. Will he find the answer to his question - "Am I a good man-.
The Doctor takes Clara to Nottingham in the 12th century, so that she can see that Robin Hood is merely a legend with no basis in reality. However, when they arrive they discover that Robin is alive and well... and so is the Sheriff of Nottingham, who is conspiring with alien robots to conquer England.
What scares the grand old man of time? What horrors lurk under his bed? Ghosts of the past and future crowd into the lives of The Doctor and Clara; a terrified caretaker in a children's home, the last man standing in the universe, and a little boy who doesn't want to join the army.
The Bank of Karabraxos is the deadliest bank in the cosmos - only a fool or genius would tempt to rob it. Fortunately, for The Doctor, he's both. But nothing even The Doctor has encountered can prepare them for the Teller: a creature of terrifying power that can detect guilt.
Clara has it all under control: her life at school, her life in space; her new boyfriend and her mad old Time Lord. Everything is humming along just fine, so long as everybody never actually meets. And then, one morning, just before assembly, Coal Hill welcomes a new relief caretaker with a Scottish accent.
In the near future, The Doctor and Clara arrive on a decrepit shuttle making a suicide mission to the Moon. Crashing on the lunar surface, they find a mining base full of eviscerated inactive persons, spider-like creatures scuttling about in the dark, and a terrible dilemma.
Aboard the most beautiful train in history, speeding among the stars of the future, a legend is stalking the passengers. Once you see the Mummy, you have 66 seconds to live. Clara sees The Doctor at his most deadliest and most ruthless - and finally she realises she's made the right decision. Because this is their last adventure: it's time to say goodbye to the Time Lord.
Clara is separated from the Doctor and discovers a new menacing figure from another dimension. But she struggles to find somewhere to hide, in time to save the Doctor and everyone else.
One morning in London, and every city and town in the world, the human race wakes up to the most surprising invasion yet: the trees have moved back in. Everywhere, in every land, a forest has grown overnight and taken back the Earth.
Plans have been drawn up in the Nethersphere. Missy will soon be about to meet the Doctor, with a impossible choice to make. The Doctor and Clara discover that the sinister organisation known as 3W have plans.
With Cybermen on the streets of London, old friends unite against old enemies and the Doctor takes to the air in a startling new role. As the Doctor faces his greatest challenge, sacrifices must be made before the day is won.