A maniacal, telepathic computer dispatches clunky Dalek-wannabees to enslave mankind. Why? Because shut up, that’s why.
An allegory about equality acted out by evil guys in blackface and fairly sophisticated cavemen. Also, The Doctor has a vibrator. No lie.
Two Docs get mixed-up; Steven and Dodo are master pianists; and the whole thing is tied together with the most annoying song in the Wild West.
The Doctor is turned invisible, inaudible and intangible, and Steve and Dodo clown around in this both childish and completely racist serial.
Dodo dooms mankind with a sneeze; cyclopses lock humans in a security kitchen; and incorporeal creatures sit down in chairs.
In addition to The Doctor, Hartnell plays a different character in this one, who also goes on holiday. And then we get a new, annoying companion.