The apocalypse kills billions—numbers so large that most survivors' minds snap shut. Foes of the US have attacked with a bioengineered contagion that spreads around the world. One of only a few survivors, Penny Castro, ex-USN diver and LA County Sheriff's Deputy, reacts differently. She fights back and creates a life for herself where death is the common denominator. On a forensic dive, she is interrupted. When she surfaces, she finds all her colleagues dead, so she has to battle starvation, thirst, and gangs of feral humans until she ends up in a USAF refugee camp. A post-apocalyptic thriller for our times, Penny's adventures will entertain and shock you into asking, "Could this really happen?"