Off the coast of Georgia, near Savannah, generations have been tempted by strange blue lights in the sky near an island called Lyra. At the height of WWII, impressionable young Elle Ranier leaves New York City to forge a new life together on the island with her new husband, Simon. There they will live for decades, raising a family while waging a quixotic campaign to find the source of the mysterious blue offshore light --- and the elusive minerals rumored to lurk beneath the surface. Fifty years later, Elle looks back at her life on the mysterious island --- and at a secret she herself has guarded for decades.