Savannah was four years old when her twin sister, Georgia, went missing from their small Louisiana town, fracturing their family. Twenty-eight years later, Savannah convinces her estranged older sisters, Rayanne and Sue Ellen, to honor the pact they made as children and retrieve the time capsule they buried in their old backyard. But coming home means confronting old ghosts...and their stubborn grandmother, Meemaw.

Sifting through the artifacts, they come across a photograph taken on the day Georgia disappeared and spot a familiar woman lingering in the background. While Sue Ellen and Rayanne want to move on with their lives, Savannah is determined to find the woman--and perhaps a clue to the past.

When old tensions, rivalries, and memories resurface, the sisters must reconsider what they thought they knew about that fateful day, about each other, and about themselves. On their search to uncover what happened to Georgia, each of them will discover what Meemaw has known all along: family is everything.