Alpha team, the world's best and last surviving Tier-1 operators, are adrift on Lake Michigan - and fast drifting into what looks like a damned hostile shoreline. Deep in the National Forest nearby, a former police officer and survivalist battles to keep her family alive - and tries to decide whether the commandos of Alpha are more dangerous to her alive or dead. Meanwhile, the John F. Kennedy, the world's last floating supercarrier, is run aground off the coast of Virginia - and facing a veritable hurricane of the dead, blowing in fast. And finally, back in Fortress Britain, the terrible outbreak from the Channel Tunnel turns out not to have been so contained after all - and a death grip is beginning to close on London, and shaping up into humanity's very last stand...