The TARDIS lands in a space museum on Earth in the late 21st century, where the Second Doctor, Jamie and Zoe learn that contact has been lost between Earth and the Moon. In this era, instant travel — T-Mat — has revolutionised the Earth. Its people have lost interest in space travel. The Doctor and his companions travel to the Moon in an old-style rocket and reach the Moonbase, control centre for T-Mat, only to find a squad of Ice Warriors have commandeered the base and plan to use the T-Mat network to their advantage.
as The Doctor
as Jamie McCrimmon
as Zoe Heriot
as Commander Radnor
as Gia Kelly
as Professor Eldred
as Fewsham
as Brent
as Osgood
as Phipps
as Locke
as Sir James Gregson
as Security Guard
as Computer Voice
as Slaar
as Grand Marshal
as Ice Warrior
as Ice Warrior
as Ice Warrior