Defend freedom. Prevent Armageddon. That's the Zeta maxim when the nefarious Ares organization plots to destabilize world powers on triple fronts across the globe. In Antarctica, Dan Morgan goes on a very personal mission and finds something in the ice that he never expected. In the deceptive calm of the Caribbean, Dan's daughter Alex is hunting a mysterious figure with nuclear ambitions. In the Indian Ocean, Dan's partner Peter Conley confronts a deep-sea mining operation set to unleash worldwide devastation.

Three Zeta teams risking everything on do-or-die missions. Three worst-case scenarios that can obliterate millions of lives in the blink of an eye. Three Ares conspiracies ingeniously designed to seize control by any means. Zeta's limits of endurance and survival are about to be challenged like never before. Because doomsday is coming. The clock is ticking. The final countdown has begun.