As the NCIS team continue searching for Benham Parsa, the leader of the infamous terrorist group, the Brotherhood of Doubt, they also find themselves investigating the death of Parsa's supposed bodyguard, only for the team to later discover that the body in question is not who it appears to be. Things then turn a turn when Bishop reveals that she has been hunting Parsa ever since her days as an analyst with the NSA which ultimately threatens to jeopardize the entire case but when Parsa launches his final game plan while being held on the USS Wilmington, triggering a crisis, the NCIS team must act quickly or risk losing one of their own forever...