Cory McNab is a proud member of the US Navy's Marine Mammal Program. Along with his dolphin partner, Kahn, he teaches new recruits how to work with their dolphins to locate underwater explosives, intercept enemy swimmers, and otherwise keep America safe.
When an elite squad of Navy SEALs deploys to the Black Sea, they need the assistance of every dolphin in Cory's top secret Mark Sixty team. With countless lives at stake, a special task force of SEALs, dolphins, and handlers sets out under cover of night in a desperate effort to stop a war before it starts.