时空穿梭，探索未知。琴瑟和谐 鸾凤和鸣书画

　　The TARDIS arrives on an apparently deserted and deactivated space station Nerva, otherwise known as the Ark, orbiting Earth in the far future. There the Doctor, Sarah and Harry discover the last survivors of the human race held in suspended animation, Earth having been evacuated thousands of years earlier when solar flares threatened to destroy all life. 　　The station has been v... (展开全部)