Daria's first experience with her new powers may have saved her life - and her two best friends - but the battle is far from over. The Dark is rising and the Doctor has only just begun to scratch the surface of its terrifying potential. Now, if Daria is going to learn the full extent of her mysterious abilities before it's too late, she'll need to leave the city behind and travel to a small community of Sleepers living in the mountains.
But as new friends emerge, and old ones are reunited, the Dark isn't about to let them regroup without a fight...
And one of their own might just become the unwitting messenger of its destructive agenda.