A Torchwood investigation leads the 10th Doctor and Martha Jones back into the world of the Weeping Angels. But their experience with Wester Drumlins and Sally Sparrow didn't exactly teach them everything they need to know about their stone adversaries. They quickly begin to discover a whole new set of Weeping Angel horrors the twenty-first century will produce.
The Tenth Doctor contemplates the meaning of his lives and looks back on his past, finding himself lonelier than ever after Rose's departure. A sudden distress signal from Cardiff puts The Doctor side by side with Torchwood, and Captain Jack Harkness gives The Doctor something that he didn't know he had missing.