Earth is an eerie and sinister place in 2150 AD. Subjected to a ferocious Dalek invasion, it has been bombarded with meteorites and cosmic rays. Its cities have been smashed and human beings turned into living dead men - Robomen - able to act only on radioed instructions from their masters. Only a small group of resistance fighters holds out in London. But then a brilliant scientist, Dr. Who, is transported into the future by a time and space machine. He arrives determined to destroy the Daleks.