Anne Shirley (Barbara Hershey) now a successful, middle-aged writer has returned to Prince Edward Island. She agrees to write a play for a theatre producer to keep her busy enough to not worry about her son who has yet to return from the war. But a letter from her errant father, provides a distraction. She delves into long-buried memories, when she was an orphan at the Green Gables farmhouse. Young Anne (Hannah Endicott-Douglas), is taken into the care of a wealthy matriarch, Amelia Thomas (Shirley MacLaine) and her daughter-in-law, Louisa (Rachel Blanchard), which changes her life forever. Over the course of one remarkable summer, Anne Shirley discovers the astonishing truth about her father.