Azuba Galloway, daughter of a shipwright, sees ships leaving for foreign ports from her bustling town on the Bay of Fundy and dreams of seeing the world. When she marries Nathaniel Bradstock, a veteran sea captain, she believes she will sail at his side. But when she becomes pregnant she is forced to stay behind. Her father has built the couple a gabled house overlooking the bay, but the gift cannot shelter her from the loneliness of living without her husband. When Azuba becomes embroiled in scandal, Nathaniel is forced to take her and their daughter, Carrie, aboard his ship. They set sail for London with bitter hearts.

Their voyage is ill-fated, beset with ferocious storms and unforeseen obstacles that test Azuba's compassion, courage and love. Alone in a male world, surrounded by the splendour and the terror of the open seas, she must face her fears and fight to keep her family together.