Haunted by the deaths of her brother and her fianci, British Army nurse Louise Whiting is posted to France during the horrors of the Battle of the Somme in the summer of 1916. Her choice to nurse the most difficult head wound cases brings a comatose soldier with no name to her ward. The search for his identity, and her determination to resurrect him, become her obsessions. As he begins to recover, Louise, who has fallen in love with him, discovers the secrets of his previous existence. Louise must confront her own past as she learns the truth about her patient.