SJA: The The Empty Planet synopses

Part One: Clyde and Rani wake up one day to discover that they are the only survivors of the human race! The whole of Earth is empty – even Sarah Jane has vanished. But a deserted London holds terrors of its own. Strange forces lurk in the shadows, as mysterious visitors approach!


Part Two : Clyde and Rani meet their enemy, as the Robots arrive on Earth – but what do they want, and where has the human race gone? It's a race against time, but without Sarah Jane's expertise, Clyde and Rani must trust each other like never before if they're to save the whole world.