The film begins with Julie (Joan Bennett) and Ives (Henry Fonda), who are two teen sweethearts, on a walk together. They declare they love each other and want to get married as soon as Ives has earned enough money for them to live on.
Hadley and Oliver begin falling in love on a flight from New York to London, but when they lose each other at customs, can they defy all odds to reunite?
With plans to leave their small town, teenage loves Annie and Ben elope. Their big city plans are halted, though, when Annie's parents have the marriage annulled. Ben moves to New York, while Annie stays in Iowa to help her family. Fifteen years later, both engaged to their respective fiancés, the two discover that their annulment was never finalized. They reunite to make their divorce legal, but begin to reminisce about what could have been. When romantic feelings resurface, Annie and Ben must decide if their past love could be the love of their future.
In early 19th-century England, dire financial straits reacquaint the aristocratic Anne Elliot with her wealthy ex-fiance Frederick Wentworth. The two must choose between either putting the past behind them or listening to their hearts.
After spending the night together on the eve of their college graduation, Dexter and Emma are shown each year on the same date to see where they are in their lives. They are sometimes together, and sometimes not.