The story runs parallel to the events of The Bourne Ultimatum . When Jason Bourne’s actions expose the CIA’s secret "Treadstone" and "Blackbriar" programs, retired Colonel Eric Byer (Edward Norton) decides to shut down , a more advanced program that uses genetic modification to enhance agents.

is the fourth installment in the Bourne franchise, serving as a "sidequel" that expands the universe while introducing a new protagonist, Aaron Cross (Jeremy Renner). Plot Overview

Aaron Cross, an Outcome agent, survives a termination attempt in Alaska and goes on the run. He teams up with scientist Dr. Marta Shearing (Rachel Weisz) to find the "chems" (medication) he needs to maintain his enhanced physical and mental abilities.