Strength dwindles as the Talbot tribe make their trek into the Darien Gap, sixty miles of broken highway and inhospitable terrain through the sweltering Central American wilderness. Stinging from their recent losses, the group is forced to sleep suspended in trees to avoid the hordes thriving there, but that brings only a temporary, miserable reprieve. Pursued by the relentless Brazilian Army, they become entangled at the mercy of yet another military faction. Alliances are few and far between but making it on their own, constantly menaced by both men and monsters makes advancement towards home increasingly unlikely. Of course, any human diversion puts the Zombie races at an advantage, and their physical and mental evolutions provide an unending stream of terror. If only the Americans could recruit a gutsy new company to fight alongside them...perhaps an unlikely force, noble, brave, and... shipwrecked?