When the hospital's power source is damaged, Vanessa and the survivors only have three hours of reserve power for the UV lights - the only thing keeping the vampires at bay. While Vanessa and Axel head into the ruins of Seattle to scavenge parts, the others are left to fight: against both vampires and amongst themselves.

Vanessa, now in the clutches of Julius and his vampire brood, is forced to demonstrate her powers; the refugees discover a serial killer among the residents, and plot to wrestle control from Axel.