Veteran cyber security specialist Thomas Sebastian Scott loses his NSA security clearance after unwittingly disclosing his former identity to the Pakistani woman who saved his life. While advising NYPD Detective Rodriguez regarding a bank heist, Scott is recalled to service to investigate a rogue faction in the Iranian embassy in Rome. Assisted by a young intelligence analyst, Rachel Sullivan, he travels to Italy where a key informant is murdered and a deadly threat against world leaders is discovered.