Spies. Terrorists. Arms dealers. For Special Agents “G” Callen, Sam Hanna, and the rest of the Naval Criminal Investigative Service, it's just another day in paradise. But there's no time to lounge when the biggest cases of their careers come calling, whether it's local crises like the murder of a Naval lieutenant or the theft of a drone prototype, or international affairs like an impending missile attack in the Middle East.