The engineer Georg de la Croix ( Herr Alfred Abel ) suffers a nervous breakdown due to the continuous unfaithfulness of his lover, Dame Sappho ( Dame Pola Negri ). Georg ends up in a lunatic asylum. His brother, Richard ( Herr Johannes Riemann ) wants to avenge him but instead falls in love with the beautiful Dame Sappho. When Herr Richard finds out from a previous lover of Dam......