It's been over a century since the humans lost the war for Earth. Cities have been reclaimed by nature, and the planet is quiet and empty by day. At night, feral vampires—more beast than man—roam the lands, hungry for blood. The few thousand surviving humans live on a massive airship that circles the Earth, moving with the rotation of the planet so it's always in sunlight. Alexandria Goddard is a member of the elite Ground Mission Team, a group tasked with making dangerous runs to the planet's surface for the supplies needed to keep the ship airborne. But even as the team fights for their people's survival, dangerous forces are working against them. A growing movement aboard the airship believes it's time for humans to resettle the Earth, and they are willing to go to extreme measures to make their vision a reality. As the situation aboard the ship becomes more desperate, Alex and her team discover a terrifying secret about the vampires infesting the Earth. P.T. Hylton, author of Regulation 19 and the Zane Halloway series, and Jonathan Benecke, a bold new voice in science fiction, bring you a post-apocalyptic vision of a world where vampires rule, humanity is on the run, and safety is an illusion as fleeting as a shadow.