Doctor Who: First Doctor

'Farewell, Great Macedon': The TARDIS materialises in the Hanging Gardens of Babylon, one of the Seven Ancient Wonders of the World, in the year 323 BC. The Doctor, Ian, Barbara and Susan meet Alexander the Great - but their excitement is tempered by the realization that these are the final days of Alexander's life. As the travellers become embroiled in the tragic events, the inevitability of history unfolds around them. But can they - and should they - change it?

On a radioactive moon on the outskirts of the Fourth Sector, the occupants of a besieged power station try desperately to hold the Daleks at bay. To this end they have apprehended a saboteur, spy, and traitor to the human race. His name is Steven Taylor. When the Doctor, Vicki and Steven first landed on the station, they little suspected the chain of events that would lead to Steven’s arrest. Now he must convince a young nurse, Chayla, and the station’s brutal Security Chief, Finn, that his intentions are honourable. But with every second wasted, the Daleks are gaining ground.