The architect Klaus Lehmann loves his wife, Elsa, with a passion that continues throughout their married life, despite long periods of separation. Almost half a century after Lehmann’s death in the village of Steerborough, a young woman, Lily, arrives to research his life and work. Poring over Klaus’s letters to Elsa, Lily pieces together the story of their lives. And alone in her rented cottage by the sea, she begins to sense an absence in her own life that may not be filled by simply going home.