Alice's husband is dead. A car accident, but it happened on a country road where Chris, according to his last call, had no business being. Doubts mix with her profound grief: Was her perfect life perhaps not so perfect after all? Alice obtains video footage of the route. Piece by piece, it leads her to Robin Island, a tiny, tranquil island off the coast of Cape Cod and Alice's last hope for an answer. When Chris dies, the perfect life of heavily pregnant Alice and her six-year-old daughter shatters. Yet, almost heavier than the loss is the fact that her husband lied during his last call. Why was his car found at that location? Where the hell was he trying to go? These questions haunt Alice, and she reconstructs her husband's last drive, her methods becoming increasingly extreme.