After so many adrenaline-soaked years risking his life, Jason Bourne is chafing under the quiet life of a linguistics professor. Aware of his frustrations, his academic mentor asks him to investigate the murder of a former student by a previously unknown Muslim extremist sect called the Black Legion. The young man died carrying information about the group`s terrorist activities, including an immediate plan to attack the United States. In Europe, Bourne`s investigation of the Black Legion turns into one of the deadliest and most tangled operations of his double life - the pursuit of the leader of a murderous terrorist group with roots in the darkest days of World War II.