Set in Detroit during the Depression, Doerr tells the affecting story of Tom, meant to die of a weak heart before he is 18, who is cossetted by his mother, but shown a world of possibilities by the flame-haired Ruby.Set in Detroit during the Depression, Doerr tells the affecting story of Tom, meant to die of a weak heart before he is 18, who is cossetted by his mother, but shown a world of possibilities by the flame-haired Ruby.