Daron Turner leads his fellow survivors halfway across the U.S. to become members of a larger colony in Big Springs, Nebraska. However, their new home has the appearance of a POW camp, and it isn't long before Daron's inquisitive nature puts him and the colony's leader J.D. Cooks, at odds. Daron's son Adam, now a wizened military strategist, discovers traitorous humans in their midst. Cooks and his cohorts are collaborating with aliens to erase man from the earth by comingling alien and human DNA. Adam leads a resistance operation that results in a trio of battles that will determine the fate of mankind.