Sweethearts is a 1938 Technicolor musical romance directed by W.S. Van Dyke, starring Jeanette MacDonald and Nelson Eddy. The screenplay, by Dorothy Parker and Alan Campbell, uses the “play within a play” device: a contemporary Broadway production of the 1913 Victor Herbert operetta is the setting for another pair of sweethearts, the stars of the show. This was the first color film for Nelson or Jeanette (as well as MGM's first three strip Technicolor feature). Broadway stars Gwen Marlow (Jeanette MacDonald) and Ernest Lane (Nelson Eddy) are appearing in a 6-year run of Victor Herbert's operetta Sweethearts (Ray Bolger dances the role of Hans). They are also very much in love after six years of marriage. Norman Trumpett (Reginald Gardiner) is a successful Hollywood talent scout under pressure to recruit Marlow and Lane for his studio, which their Broadway producer Felix Lehman (Frank Morgan) is equally determined to prevent.