After his regeneration, the Doctor arrives in Victorian London and finds a dinosaur running rampant in the Thames. While adjusting to his new body, he becomes aware of a spate of deadly spontaneous combustions and tries to work out the link between the two.
The commander of a hospital ship in the far future asks the Doctor to help treat a most unusual patient: a Dalek. The Doctor sets out to reform it but must soon question his own prejudices concerning his mortal enemies.
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.
The Doctor decides to determine why all beings share a fear of a creature under the bed. His quest for knowledge will take him to the end of the universe to rescue a stranded time traveler who may hold the secret to the mystery.
The Doctor answers the TARDIS' telephone... and finds himself and Clara mind-wiped and preparing to rob the most impregnable bank in the universe for an unknown prize.
Danny Pink and the Doctor are about to meet. The Doctor goes undercover as the terrifying Skovox Blitzer prepares to destroy all of humanity.
The Doctor and Clara find themselves on a space shuttle about to take part in a suicide mission to the Moon. When they crash land, they find themselves facing a dilemma. When Clara turns to the Doctor for help, she is shocked.