Peggy Sue was a popular student when she graduated high school in 1960. She married her high school sweetheart Charlie and had two kids with him. Now in 1985, Peggy Sue is attending her 25 year high school reunion. She and Charlie had a horrible marriage and are now seperated. At her reunion, Peggy faints on stage after being voted "reunion queen" and wakes up back in 1960! Now Peggy has to deal with her parents rules, her annoying kid sister and going back to high school all over again. She also has to deal with Charlie who is baffled by her recent bitterness towards him. This movie raises the question "what would you do differently if you had to do it all over?"
Continuity mistake: In the opening scene the camera pulls back from a bedside locker to an over the shoulder shot of Kathleen Turner's character doing her make up in the mirror. Close inspection shows that the shoulder in the foreground is actually that of a double who doesn't quite match Turner's movements.