It is 1945 and Anne Shirley has returned to Prince Edward Island for an extended visit. On a whim, she agrees to write a play for a theatre producer with hopes that it will distract her from the thought of her only son who is in service in the War overseas. But a long-hidden secret in the form of a letter from her errant father, discovered under the floorboards at Green Gables provides a distraction of its own. As Anne begins to delve into long-buried memories, reliving the troubled years before she arrived at the Green Gables farmhouse, she is forced to confront the stories made up about her life to cope with her mother’s death and her father’s abandonment. As a child, young Anne was taken into the care of a wealthy matriarch, Amelia Thomas (Shirley MacLaine), and her daughter-in-law, Louisa (Rachel Blanchard), which changed her life forever. Anne finally reveals the astonishing truth about her father, the origins of her quest of kindred spirits and the roots of her brilliant imagination.