The time: 1959. The place: the Shangri-La Holiday Camp, South Wales. The Doctor and Mel want time out. The hedonistic alien Navarinos wants to catch some vintage rock and roll. And two CIA agents want to know what happened to their country's missing satellite. When the beautiful Chimeron princess Delta shows up on the scene, the murderous Bannermen soon follow in hot pursuit. The stage is set for a fiery showdown that will decide the fate of an entire civilisation.