Tom Sherbourne, released from the horrors of the First World War, is now a lighthouse keeper, cocooned on a remote island off Western Australia with his young, bold and loving wife. Izzy is content in everything but her failure to have a child. Years later, after two miscarriages and a stillbirth, a boat washes ashore carrying a dead man - and a crying baby...now the path of the couple's lives hits an unthinkable crossroads. Safe from the real world, Tom and Izzy break the rules and follow their hearts. It is a decision with devastating consequences...