UNIT are called in when top secret plans and valuable equipment is stolen from high security establishments.
Using the deadly disintegrator weapon, the robot steals the destructor codes.
Sealed inside an underground bunker, Miss Winters issues her demands to the world's leaders.
The robot, distraught over killing its creator, takes Sarah hostage and goes on a rampage.
The survivors of mankind are in cryogenic suspension aboard the Nerva Beacon space station.
The survivors of the human race start to awaken. But Perhaps not all of them are entirely human.
Humankind faces total destruction. Can the Doctor defeat the Wirrn?
Trapped by the Wirrn, The Doctor and his friends are forced into one last terrible gamble.
Arriving on Earth, the Doctor, Harry and Sarah meet a group of stranded human colonists.
Sarah has been captured by Styre who is conducting experiments on the captured humans.
The Time Lords send the Doctor to Skaro at a point in time shortly before the creation of the Daleks.
The Doctor finds that some of Davros’s fellow Kaleds are unhappy with the development of the Daleks.
The Doctor informs the Kaled government of Davros's experiments and they move to shut down the bunker.
When the Kaled dome is destroyed by the Thals' rocket, the war appears to be over.
Davros interrogates the Doctor, forcing him to reveal the future of the Daleks.
The Kaled scientific elite move to prevent the development of the Daleks.
The Doctor, Sarah and Harry return to the Nerva Beacon space station, but at an earlier point in time.
Sarah is the latest victim of the space plague and the only way to cure her is by transmatting her to Voga.
The Doctor and two of the Nerva crew become walking bombs which the Cybermen plan to detonate.
Their plan to blow up Voga thwarted, the Cybermen intend to crash Nerva into the planet.