STORYLINE

Injured after a shoot-out between his old nemesis the Master and the Ogrons, slaves to the evil Daleks, the Doctor sends a message to the Time Lords, asking them to pilot his TARDIS and follow the Daleks to their new base. After he slips into a coma, it falls to his assistant Jo Grant to explore the planet where the TARDIS finally materializes.

Not only must the Doctor contend with the Daleks' new stratagem, but he must try to stop them unleashing a plague that will exterminate all organic life. When a rescue ship of Thals arrive, they bring with them darker news still - somewhere on Spiridon 12,000 Daleks are waiting to emerge and take what they believe is their rightful place as the Universe's supreme beings!