The brave men and women of the US Secret Service have one of the most difficult jobs in the world: safeguarding the President of the United States, but in reality the scope of their duties spans the globe and touches people everywhere. In this series, cameras are allowed behind the scenes for the first time as the Secret Service mounts a massive manhunt for counterfeiters in Columbia, battles credit card and cyber theft masterminds in Miami, and in one extraordinary event, protects the leaders of nearly every nation on earth and safely delivers 131 heads of state to one island, one building, and briefly, one room. For the Secret Service, it is the security equivalent of the moon landing, and it happens every year at the United Nations General Assembly.