The TARDIS lands on a small space craft where the Doctor is attacked by a Servo Robot and rendered unconscious. However, the ship is also the staging ground for the Cybermen.
The TARDIS lands on the sea near the coast of England. Reaching the shore by dinghy, the Doctor investigates a gas pipe and is concerned by the sound of a heartbeat from inside.
The Doctor, Jamie and Victoria discover that Yeti have invaded the London Underground.
After arriving in Australia, the Doctor is mistaken for a scientist called Salamander who is regarded as a hero. But some believe he is intent on being dictator of the world.
The TARDIS arrives on Earth during a new ice age. The Doctor, Victoria and Jamie enter Brittanicus Base but out on the glacier, a large Viking like creature is found buried.
The Doctor is delighted when the TARDIS returns him to the Himalayas in 1935 near the Detsen monastery where the Doctor had been given a sacred bell, the ghanta, for safe keeping.
The TARDIS takes the Doctor, Jamie and their new companion, Victoria to the world of Telos where they encounter an archaeological expedition in search of the long dead Cybermen.