March 1912: Elspeth Dunn, a young poet on Scotland's Isle of Skye, receives her first fan letter from student David Graham in America. Their correspondence blossoms into love -- until World War I engulfs Europe. June 1940: As World War II begins Elspeth's daughter, Margaret, falls for an RAF pilot. When a bomb rocks Elspeth's house, dislodging her hidden letters, Elspeth disappears. Only one letter remains to help Margaret find her mother and the...