Long ago, on Christmas Eve, a baby was abandoned in the snow. Today, Ruby Sunday meets the Doctor, goblins, stolen babies and, perhaps, the secret of her birth.

Ruby learns the Doctor's amazing secrets when he takes her to the far future. There, they find a baby farm run by babies. But can they be saved from the terrifying bogeyman?

Landing on the Welsh coast, the Doctor and Ruby embark on the strangest journey of their lives. In a rain-lashed pub, the locals sit in fear of ancient legends coming to life.

The Doctor and Ruby land in 1813, where guests at a duchess's party are being murdered and a mysterious bounty hunter called Rogue is about to change the Doctor's life forever.

The Doctor and UNIT investigate Ruby's past. But as the Time Window reveals horrifying secrets from Christmas Eve, the mysterious Triad Technology unleash the greatest evil of all.

The Doctor has lost, his ageless enemy reigns supreme, and a shadow is falling over creation. Nothing can stop the devastation... except, perhaps, one woman.