Poring over a dusty hatbox of photographs in her grandmother's closet, Emily Prentice is shocked to discover her father was married and divorced before meeting her mother.

In the summer of 1968, Jack and Libbie fall in love under the spell of their small town, untouched by the chaos of the late sixties. Though Libbie's well-to-do parents disapprove of Jack's humble background, she marries Jack a year after they graduate high school. But soon their happiness crumbles as Libbie's mental state unravels and she is drawn to alcohol and drugs. Despite his efforts, Jack loses the woman he loves and is forced to move on with his life.

Now that Emily's mother has passed and Jack is alone again, Emily grows obsessed with the beautiful woman who'd given her father such joy. Determined to find Libbie, Emily pieces together the couple's fragmented past. But is it too late for happy endings?