In mid-nineteenth-century Ireland, charming Kathleen and dashing Michael harbor secrets and dreams. Imagining a life beyond the kitchen and fields of the wealthy family they both work for, they plot to leave their homeland, marry, and raise the child Kathleen is secretly carrying. The luck of the Irish, however, is not on their side. Soon, they find themselves swept up in circumstances they never could have fathomed. Kathleen is forced to marry against her will and immigrate to New Zealand.

Hardworking London governess Helen Davenport longs for a family of her own but knows the prospect of finding a suitable husband grows dimmer each year. Then she spots an advertisement seeking wives for the churchgoing bachelors of colonial New Zealand and begins an affectionate correspondence with a gentleman farmer.Meanwhile, not far away in Wales, society life bores Gwyneira Silkham, beautiful, daring daughter of a wealthy sheep breeder.

London, 1732: Nora Reed, the daughter of a merchant, falls hopelessly in love with her father's clerk, Simon. Despite their differing social class, the star-crossed lovers dream of a future on a tropical island - until tragedy strikes, and Nora must face a life without her soulmate. Hopeless, Nora enters a marriage of convenience with Elias Fortnam, a widower and sugar planter in Jamaica. Even without Simon, she is determined to somehow fulfill their tropical fantasy.

World War II comes to Farleigh Place, the ancestral home of Lord Westerham and his five daughters, when a soldier with a failed parachute falls to his death on the estate. After his uniform and possessions raise suspicions, MI5 operative and family friend Ben Cresswell is covertly tasked with determining if the man is a German spy. The assignment also offers Ben the chance to be near Lord Westerham's middle daughter, Pamela, whom he furtively loves. But Pamela has her own secret.

Following the death of her father, CeCe D'Aplièse finds herself at breaking point. In desperation, she decides to flee England and discover her past; the only clues she has are a photograph and the name of a woman pioneer who lived in Australia over 100 years ago. When CeCe finally reaches the Red Centre of Australia, she begins the search for her past. With help from those she meets on her journey, CeCe begins to believe that this wild, vast continent could offer her a sense of belonging.