The assassination of President Kennedy made Frank (Clint Eastwood), his personal bodyguard, fall into a state of self-blame. Even after many years, whenever he thought of this moment, Frank always felt that it was his negligence and carelessness that caused this tragedy. One day, a mysterious phone call aroused his vigilance. The man who called was named Mickey (John Malkovich). He told Frank that he was going to assassinate the current president and invited Frank to play a so-called "game". The success or failure of this game would directly affect the fate of the president. The past repeated itself. This time, Frank decided to protect the safety of the president at all costs. Who is this Mickey? What is his purpose in doing this? In the face of a series of questions, a fierce and dangerous game of pursuit gradually unfolds.