A man is rescued from the Mediterranean with two bullets in his back and no memory. He discovers a Swiss bank account number implanted in his hip, leading him to a large sum of money and various passports, one bearing the name Jason Bourne.

Realizing he's being hunted, Bourne, with his innate combat skills, takes Canadian economist Marie St. Jacques hostage. Together, they evade a shadowy network of killers and unravel clues pointing to a clandestine organization called Treadstone 71. Bourne believes he might be a notorious assassin named Carlos, and he races to expose the truth about his identity and the dark mission he was involved in.

A man with amnesia is pulled from the Mediterranean Sea, bearing two bullet wounds and a mysterious laser implant with a Swiss bank account number. He has no memory of his past but possesses extraordinary combat and linguistic skills. Following the clue, he discovers a stash of passports, cash, and a gun, with one passport identifying him as "Jason Bourne."

Realizing he's being hunted by a shadowy organization, he reluctantly enlists the help of a German traveler, Marie. As they evade relentless assassins across Europe, Bourne slowly uncovers fragments of his past, realizing he was a highly trained operative for a secret CIA black-ops program called Treadstone, and the target of their termination efforts.

Living in hiding in Goa, India, with Marie, Jason Bourne is pulled back into his deadly world when a Russian assassin, Kirill, attempts to kill him and inadvertently kills Marie. Devastated, Bourne believes the CIA is hunting him again. He travels to Naples, then Berlin, seeking answers about a new operation, "Blackbriar," and a CIA conspiracy involving a stolen $20 million and the assassination of a Russian politician named Neski.

Bourne, framed for the murders, relentlessly pursues those responsible, uncovering the truth behind the frame-up and finally confronting the corrupt CIA official, Ward Abbott, who masterminded everything. He seeks to find peace by revealing the truth about his past and the events that led to Marie's death.

Haunted by fragmented memories and the death of Marie, Jason Bourne continues his relentless quest to uncover the truth about his past and the Treadstone program. He targets a British journalist who uncovers new leads, inadvertently drawing the attention of Noah Vosen, the ruthless head of the CIA's Blackbriar operation – a successor to Treadstone.

Bourne races across the globe, from London to Tangier and New York, piecing together clues while evading a relentless international manhunt. His ultimate goal is to expose Blackbriar and confront the architects of his creation, leading to a climactic showdown where he finally uncovers his true identity and the dark origins of his existence as a trained assassin.

With Jason Bourne's actions exposing Treadstone, other black-ops programs like "Outcome" are jeopardized. Colonel Eric Byer orders "Outcome" terminated, including all its agents. Aaron Cross, an enhanced Outcome operative reliant on performance-enhancing "chems," survives the purge.

He teams up with Dr. Marta Shearing, a scientist who helped create the program, to find more of his medication before his enhancements wear off. Pursued by Byer's ruthless assassins, Cross and Shearing race against time to Manila, aiming to make Cross's genetic enhancements permanent and expose the program.

Amnesiac operative Jason Bourne is living a quiet life, haunted by fragmented memories. When a journalist uncovers new information about his past, Bourne is drawn back into the world of black-ops programs and assassinations.

He navigates a global conspiracy, evading a relentless CIA hunt led by Director Robert Dewey, who will stop at nothing to bury the truth. Bourne seeks to expose the clandestine "Ironhand" operation and finally understand who he is and the full extent of his involvement in the agency's morally bankrupt activities, culminating in a high-stakes showdown in Las Vegas.