Dan, a middle manager working in San Francisco, is thrust into a fight for his life. He must overcome who he is and learn to fight for his life and lead those around him. While surviving, he finds the real reason for the zombie outbreak and is pulled into a whole new fight, this time against a shadowy power calling themselves the Culling Initiative.

Dan survived the flu and zombies in the Trans America Tower. He escaped the zombie hordes in San Francisco, with help from his new friends in the SFPD SWAT team and on his way out rescued a mysterious little girl named Angel. Dan is an emerging hero, who helped discover the plans of the culling initiative and their mercenary army, the Ridder Group. Now he must rescue his ex-girlfriend Julie, and his friend Vic's wife from numerous hordes of the dead.

Dan has rescued Julie and has been reunited with his dad, but in the end he lost so much more. After waking in a military hospital, he learns of his injuries and the loss of his little Angel. His body and faith will be tested. Will he ever be free of the scourge and have a normal life again? Will he be able to rally his troops and find a possible cure? With his best friend Brian by his side and his SWAT family standing squarely behind him, he will be become the leader that he never knew he could become.

The world fell apart while Lieutenant Chun and his men trained for a mission in the Nevada desert. They must fight their way across two states and rescue their brother SEALs from the zombie hordes crawling all over Coronado Airbase. They need to pick a side in the battle between General Richards and the Culling Initiative. Will they pick the right side or fall into the corrupt trap?

Brian has stood by Dan’s side as they have battled the dead, Ridder, and the Initiative. He has been loyal to his friend and fought his way through hell. Now as Dan becomes cut off from Angel, Brian must accept his destiny and leave his brother’s side to embark on a journey to save kidnapped friends. As Brian calls in the Posse of former SWAT and Delta friends, the zombies continue their deadly attack on the living as Ridder does the unbelievable. Can Brian do what needs to be done before the world is awash in ashes?

With Dan’s daughter Amira to keep him planted firmly in the light, and his best friends by his side, he makes alliances with former foes from Russia and China. Dan, Nikolai, and Zhao design plans to go after and stop Ridder once and for all. Brian has been promoted to general of Special Operations and sends his troops across the USA with new Russian and Chinese warriors embedded with Aces and the other teams.