In this dialogue-free film, Emma Hart (Corinne Griffith), a young woman of lowly birth, is courted by rich Charles Greville (Ian Keith). But, after he grows tired of Hart, he sends her to live in Naples, Italy, with his uncle, Lord Hamilton (H.B. Warner), whom she marries. Despite living peaceably with her new husband, Hart is drawn to Capt. Horatio Nelson (Victor Varconi), who she meets while serving as confidante to the queen of Naples. The two begin an affair with risky social consequences.