The Lighthouse Keeper’s Daughter is set in two timelines: 1838 and 1938. In 1838, Grace Darling became famous for rescuing shipwreck survivors, while developing a friendship with artist George Emmerson. In 1938, pregnant Matilda Emmerson is sent to stay with her relative, a lighthouse keeper, uncovering her family’s connection to Grace. Both women face acts of bravery and love, linking their lives across a century (Hazel Gaynor).