Answering a call from UNIT, the Doctor arrives in London to find the streets deserted, apart from looters in possession of a valuable commodity - water.
Britain is suffering an extreme and bizarre drought. The cause is suspected to be extra-terrestrial.
The discovery of a signal being transmitted into space, and of a spacecraft whose crew are desiccated corpses, provides a possible answer. But the true enemy is an old foe of the Doctor’s.
The Cybermen have been patient, setting their plans in place over a number of years. As the final stage is implemented, in the darkest hour, the Doctor must identify who among his allies he can trust.
Written By: Andrew Smith
Directed By: Jamie Anderson
Colin Baker (The Doctor), David Banks (Cyber Leader), Mark Hardy (Cyber Lieutenant), Frog Stone (Riva), Blake Harrison (Daniel Hopkins), Wayne Forester (Atriss / Bill Parker / Captain Weaver), Russ Bain (Lewis Price / Kel). Other parts played by members of the cast.
Producer John Ainsworth
Script Editor Alan Barnes
Executive Producers Jason Haigh-Ellery and Nicholas Briggs