Jason Bourne's nemesis Arkadin is still hot on his trail & the two continue their struggle reversing roles of hunter & hunted. When Bourne is ambushed & badly wounded he fakes his death & goes into hiding. In safety he takes on a new identity & begins a mission to find out who tried to assassinate him. Meanwhile an American passenger airliner is shot down. Bourne's search for the man who shot him intersects with the search for the people that brought down the airliner leading him into one of the most deadly & challenging situations he has ever encountered. With the threat of a new world war brewing Bourne finds himself in a race against time to uncover the truth & find the person behind his assault all the while being stalked by his unknown nemesis...