Jack Walker and Michael Talbot come from two worlds; the same, yet different. They both find themselves transported into an alien one, where things aren't as they seem. While it appears similar to the ones they come from, there are some terrifying differences. Is it a dream? Or has reality been somehow warped? Jack comes from a world filled with nocturnal creatures that were once human, but now seek to destroy the last vestiges of humanity.
Jack, Mike and Trip were ripped from their loved ones and thrown into a dangerous world they know nothing about, relentlessly pursued by Night Runners, Zombies and terrifying new creatures known only as Whistlers.
Like their own worlds, civilization has collapsed and danger lurks around every corner. The trio can do nothing but march forward and attempt to find some answers - some way to escape from the nightmare. Seeking only to return to their families, they must navigate through the unknown.