When sun flares hit the Earth, intense heat, toxic radiation andflooding followed, wiping out much of the human race. Those whosurvived live in basic communities in the mountains, hunting forfood.
For Mark and his friends, surviving is difficult, and then anenemy arrives, infecting people with a highly contagious virus. Thousandsdie, and the virus is spreading. Worse, it's mutating, andpeople are going crazy. It's up to Mark and his friends to find the enemy  anda cure before the Flare infects them all.