An unassuming divorced English teacher stumbles upon a time portal that leads to 9/9/1958 and goes on a quest to try and prevent the assassination of John F. Kennedy.

Jake's friend asks him to help him stop John F. Kennedy's assassination by going back in time and finding out who really killed Kennedy... and killing them.

Thrown by the enormity of his goal, Jake decides the one thing he can do to make a real difference is save the family of his friend Harry Dunning. Harry's family was murdered in a small Kentucky town by Harry's out-of-control father, Frank.

Jake finds an unlikely ally in his quest, local drifter Bill Turcotte. He gets a teaching job in a small town near Dallas and discovers romantic sparks with a school librarian Sadie Dunhill.

Jake and Bill's partnership starts to struggle as they discover more secrets surrounding the unpredictable Lee Harvey Oswald. The conspiracy involving Oswald deepens. Romance blooms for Jake and Sadie.

Everything begins to fall apart as Jake struggles to live two lives: teacher and time traveler. When Sadie's life is threatened, Jake has to make a terrible choice. Lee Harvey Oswald takes steps that will lead him into a date with destiny.