When a struggling comedian shows one act of kindness to a vulnerable woman, it sparks a suffocating obsession which threatens to wreck both their lives.

Following the murder of his fiancée, Mitch Rapp trains under the instruction of Cold War veteran Stan Hurley. The pair then is enlisted to investigate a wave of apparently random attacks on military and civilian targets.

Hell-bent on revenge, terrorists attack a group of world leaders in London. Now, it's up to agent Mike Banning to save the US president — again.