Shelby Sparks and Max Berkman are hiking above the Colorado Bend River in Texas when the night sky is filled with the aurora borealis. A beautiful sight, Shelby realizes that it also signals the end of life as they know it. A major solar flare is the only thing that would cause the aurora to be seen so far south, and such an event would destroy all modern technology--including electricity. What follows is a fight for survival as the town of Abney comes to terms with the fact that they must work together or perish. Can God protect them against nature's destructive force? Will neighboring towns work with them, or try to take what meager resources they have? And what of Shelby's son, Carter? How will she provide him with the insulin he needs to survive? As deep shadows stretch across the land, Shelby and Max will be pushed to their limits, where they'll discover if they have the faith and strength to become a part of the Remnant of Christ.