When gang warfare claims the life of one of Michael's childhood friends, he teams up with the victim's brother to entrap the gang in Fiona's weapons scheme.

As the team reaches a breaking point with Anson and his sinister plans, Pearce puts Michael in charge of his biggest CIA mission yet.

Michael finally gets a solid lead on Anson, but the plan to get Fiona out of prison hits a snag when an MI-6 agent tries to prevent her release. Across town, Sam must protect Barry after a cold-blooded assassin traps them in a secluded beach house.

The team travels to Panama to capture an assassin; Madeline tries to obtain difficult answers.