With Grigory Krukov as the last remaining leader of the conspiracy and Mary being held at the Russian Embassy, Bob Lee, Julie, Nadine, and Isaac must work together to find a way to save Mary, shut down the conspiracy, and prove Bob Lee innocent once and for all.

After Julie and Mary are abducted, Bob Lee must figure out a way to broker an exchange for the recently acquired evidence he lifted from Jack Payne. Nadine, working with Bob Lee, struggles to balance her allegiance to him and the FBI, as Isaac strikes a tenuous deal to assist them as trade for his freedom after it's done.

Bob Lee and Nadine plot to secure evidence that could expose the conspiracy; Isaac searches for an exit strategy; Payne tries to flee; and Julie and Mary are in danger.

Bob Lee travels across the country in order to find the shooter; Julie deals with a family betrayal; Nadine contacts a Ukrainian reporter who can explain the conspiracy; and Isaac questions his allegiance.

Bob Lee tracks down his former instructor, who he hopes will help him find the shooter; Nadine interrogates Payne; Isaac realizes that he's in over his head; and a reporter makes Julie an offer.

Bob Lee locates the bullet from the assassination, which leads him to a radical militia group and Isaac; and Nadine is locked in a deadly game of cat and mouse with Payne.

Bob Lee plans his next moves; and Isaac ties up loose ends. In other events, Nadine investigates the Ukrainian connection.

Bob Lee reaches out to Nadine while evading his pursuers; and Isaac juggles his double life while trying to find Bob Lee.

Bob Lee tries to protect his family while incarcerated and Isaac aims to silence him. In other events, Nadine contacts Bob Lee's wife, Julie, who's dealing with the backlash against her family.

When a plot to assassinate the President of the United States is discovered, highly-decorated veteran Bob Lee Swagger is recruited by his former Commander, Isaac Johnson, to help prevent the attempt. Meanwhile, disgraced FBI agent Nadine Memphis, investigates potential assassins.