The AB Chrysalis Space: 1999 : Season 2 Episode 12
TV-14 (self-applied) ITV 50m int(0)
Aired: November 18th, 1976 @ 12:00 AM EST on ITV
The Alphans land on a planet seemingly devoid of any human existence but being run by a group of machines. The machines explain to the visitors that their human overlords are in a state of regeneration but the chief machine, the Guardian,sees the Alphans as posing a threat and it is down to two newly regenerated females known as A and B to decide their fates.