The Jason Bourne incident caused a chain reaction, with the Treadstone project and the CIA's use of drug control to strengthen agents being made public through newspapers, making people behind the scenes uneasy. In order to prevent a complete defeat, CIA officials decided to suspend the plan and eliminate relevant agents and scientists from the operation. In the days that followed, agents who were deep at the bottom of national politics and relied on blue-green pills to perform various top-secret missions died one after another. The executor responsible for dyeing his dirty hands, former U.S. Air Force Colonel Eric Bell (Edward Norton), is slowly reaching out to agent Alan Krause (Jeremy Renner), who is hiding in the mountains of Alaska and deep into the snow. The sudden artillery attack made Alan realize the dangerous situation he was in. In the days that followed, he not only had to survive the pursuit of his former companions, but also had to find the blue-green pill that had provided him with a steady stream of physical strength and intelligence...