Recap: The Sarah Jane Adventures S 4 E 7 E 8 The Empty Planet

Clyde and Rani awaken one morning, to discover that everyone on Earth has mysteriously vanished, even Sarah Jane and Mr. Smith. Whilst exploring the deserted London, they encounter a boy named Gavin, who's just as confused as they are.Eventually, the force behind the disappearance of the human race make themselves known, a pair of cyclopic robots, one red and one yellow, began to chase the three teens through the deserted streets.

Tropes