Policeman List of companions in Doctor Who spin-offs#Tom Campbell comes upon several men burgling a jewellery shop. Running to what appears to be a police box to call for backup, he enters Tardis, a Time travel operated by its inventor Dr. Who (Dalek films), together with his niece List of companions in Doctor Who spin-offs#Louise and granddaughter List of Doctor Who spin-off companions#Susan, as they are about to depart for the future. Arriving in London in the year 2150, they find a desolate landscape of ruined buildings. It transpires that the Daleks, who Dr. Who and Susan encountered in ''Dr. Who and the Daleks'', have invaded Earth and ravaged the planet. Some of the survivors have formed a resistance movement, while those captured have either been turned into brainwashed slaves called List of Doctor Who henchmen#Robomen, or taken to provide forced labour at a Dalek mining complex in Bedfordshire.