The border dispute between Camden and its neighbor Maitland has been settled for nearly two centuries. Only one question remains open: the fate of Fort Colwyn — a small, largely forgotten island sitting in the shared Bay of Fundy that neither country has ever bothered to seriously claim. When a Maitlandish industry titan receives permission to develop the island as an offshore facility, the island's final year of human habitation begins. A third-generation Colwynite struggles to imagine life anywhere else. The ferryman's daughter becomes an adult as the world of her childhood quietly ceases to exist. A Maitlandish oil heiress tries to reconcile a complicated past with an uncertain future. Love, blame, memory, and history — and the absence of all of them.