 Vienna, 1906. A passionate love story develops between Franz Lobheiner (Alain Delon) and the young Christine (Romy Schneider). Lobheiner is, however, currently seeing the married Baroness von Eggersdorf. Upon learning of his wife s infidelity, the Baron von Eggersdorf provokes a duel with Lobheiner. But the former is no longer a real threat to the Baron. Lobheiner is now passionately in love with Christine. How will this love quartet end?