Sam's leap takes a dramatic turn when he begins leaping randomly throughout the life of Lee Harvey Oswald, accused assassin of President John F. Kennedy. Matters are complicated further when Sam's mind becomes tangled with Oswald's.
Sam leaps into a bar with a bartender that's more than he appears. When Sam looks into a mirror, he sees his own reflection. In the future, they realize that Sam has leaped into himself, they search history for Sam. Sam learns more about Quantum Leap, and who's responsible for his leaps. Before he takes his next leap, he realizes he must correct something that could affect his personal history.