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神秘博士
Milestones this season included not one but two encore appearances by the Daleks; the departure of the original three companions, Susan Foreman, Barbara Wright and Ian Chesterton; and the first appearance of someone else from the Doctor and Susan's home planet, and the first Time Lord enemy to appear.
An accident in flight leads to the TARDIS and the travellers being miniaturised. Now only an inch high, the Doctor, Barbara, Ian and Susan explore an English country garden.
Ian and Barbara are accidentally taken into Smithers' laboratory and, while the Doctor and Susan face a hazardous journey to reach them, they witness the deadly effects of DN6 first hand.
The Doctor and his friends face a race against time to expose Forrester's plans and return to normal size before Barbara succumbs to the effects of DN6.
The TARDIS lands in a ruined and empty London in the 22nd Century. Robomen patrol the shattered streets. The Doctor is eager to discover the cause of the city's plight.
The Doctor and Ian are taken to the Dalek saucer while Susan and Barbara join the rebels in planning an attack.
The Doctor manages to escape from the Dalek saucer and meet up with Susan and David but Ian is left trapped onboard. Meanwhile, Barbara and her new friends face a dangerous journey across London.
While Susan and David try to find a way out of London, Ian and Larry infiltrate the Dalek mine workings.
The Doctor's party investigate the Daleks' central control in Bedfordshire while Barbara and Jenny's attempt to reach it are derailed when they are betrayed.
The Daleks' plan to transform Earth into a giant spaceship and wipe out its inhabitants is nearing completion and the Doctor and his friends face a race against time to prevent them from destroying the planet's core.
On the planet Dido, the monstrous Koquillion terrorizes Bennett and Vicki, the only survivors of a crashed spaceship. When the TARDIS lands, the Doctor, Ian, and Barbara team up with Vicki to discover what Koquillion is hiding.
The Doctor and Ian reach the crashed spaceship and meet up with Barbara and Vicki, where the Doctor uncovers the truth about Koquillion.
After relaxing at a Roman villa the Doctor is mistaken for a murdered lyre player and targeted by an assassin. Meanwhile, Ian and Barbara are captured by slave traders.
Barbara is sold as a slave and Ian is to be trained as a gladiator. The Doctor and Vicki arrive at the Emperor's court with the Doctor still masquerading as Maximus Pettulian.
Poppaea plans to poison Barbara who has become the object of Nero's affections. The Doctor is to be thrown to the lions and Ian and Delos are set against each other in the arena.
Inspired by the Doctor, Nero sets Rome ablaze. Ian must fight his way out of the arena and rescue Barbara. The Doctor and Vicki hurry to flee the city and escape to the TARDIS.
The TARDIS is drawn by a mysterious force and lands on the alien planet Vortis. There the Doctor, Ian, Barbara and Vicki find themselves caught up in a war between an evil force known as "The Animus", its ant-like Zarbi allies, and the butterfly-like Menoptra race and their allies the subterranean Optera.
The Doctor, Ian and Vicki are captured by the Zarbi while Barbara meets up with the butterfly-like Menoptera who are trying to reclaim the planet.
The Doctor is forced to co-operate with the Animus but Ian uses the opportunity to make an escape attempt.
Ian and Vrestin are captured by the subterranean Optera while Barbara and her Menoptera allies attempt to escape from the slave camp.
Barbara and the surviving Menoptera take refuge in the Temple of Light while the Doctor and Vicki attempt to escape by taking control of a Zarbi.
