The well-deserved rest of the famous former sniper Bob Lee Swagger is interrupted in the most unexpected way: an unfamiliar woman, having found him in a local bar, says that she will never leave him behind until he listens to her. She told Swagger about the sudden death of her husband, a prominent journalist, who had recently been hit by a car. An accident?.. But here is the circumstance: recently he has been closely involved in the long-standing case of the assassination of John Kennedy, declaring that he managed to find completely new evidence that changes the picture of what happened. Interested, Swagger promises the widow to look into her husband's discovery. The investigation leads him to the mystery of the last, third bullet fired that autumn day in Dallas. The bullet struck the president's head, but was never found. The great shooter has no idea: there are still those who very much do not want the truth to ever be revealed...