Matt Damon ("Jason Bourne") is fished out off the sea by a passing fishing boat and after having had bullets removed from his back, determines to find out just what happened to him. One slight snag - he has absolutely no idea who he is! Luckily, his rescuer has some skill with a scalpel and aside from the bullets, he removes a small gadget that contains details of a Swiss bank account that ultimately gives him a name, but asks far more questions than it answers. He goes to the US embassy, but that doesn't quite go to plan and in escaping picks up the feisty "Marie" (Franka Potente) and the two...