Ann Fowles Jr. always envisioned a quiet life in her English village—until the Latter-day Saint missionaries arrived with a message of faith more powerful than anything she'd ever known. Risking everything to reach Zion, she and her family set sail aboard the Windermere alongside a group of Saints.

But doubts about the journey linger, and when unprecedented storms threaten the ship from the moment it leaves harbor, Ann wonders if God has abandoned them. Eager to help her family and strengthen her faith, she has no time for the handsome sailor who vexes her whenever they meet.

Will Boyd, first mate of the Windermere, is a man of reason rather than faith. He has no interest in a romantic entanglement with a religious zealot&mdmash;no matter how beautiful. Will and Ann's early exchanges are filled with mutual resentment: he's exasperated by her insufferable idealism, and she finds him far too gruff. But when looming challenges at sea reveal new depths to their characters, unexpected feelings begin to blossom. Amid the dangers, miracles, and trials of faith Ann faces on the voyage, she must decide whether she is prepared to trust in God's plan—even if it means leaving the man she is growing to love.