A former Marine sniper who discovers a plot to kill the president is drawn into a clandestine operation to keep the commander in chief safe.
Marine veteran Bob Lee Swagger discovers that he has been framed and must do everything in his power to protect himself. FBI agent Memphis investigates potential assassins.
Bob Lee struggles to protect his family from behind bars. Nadine reaches out to Bob Lee's wife, who deals with the backlash against her family.
Bob Lee reaches out to Nadine as he evades his pursuers. Isaac juggles his double life as he tries to find Bob Lee.
In a flashback to their time serving in Afghanistan, Bob Lee and Isaac clash with opposing ideologies. Nadine investigates the Ukrainian connection.
Bob Lee finds the bullet from the assassination, leading him to a radical militia group. Nadine becomes locked in a deadly game of cat and mouse with Payne.
Bob Lee tracks down his former instructor Rathford O'Brien to help him find the shooter. Nadine interrogates Payne. Isaac discovers he's in over his head.
Bob Lee crosses the country to find the shooter. Julie deals with a family betrayal. Nadine contacts a Ukrainian reporter who can explain the conspiracy.
Bob Lee and Nadine weave a plan that could expose the conspiracy. Isaac reaches for an exit strategy, Payne tries to flee, and Julie and Mary face grave danger.
Bob Lee must broker a dangerous exchange in order to save his family. Nadine struggles to balance her allegiances to Bob Lee and the FBI. Isaac strikes a deal.
Bob Lee, Julie, Nadine, and Isaac work together to breach the Russian Embassy, save Mary, shut down the conspiracy - and prove Bob Lee innocent once and for all.