Bella Donna ( Pauline Frederick ) a seductive woman snares Nigel Armine ( Thomas Holding ) into marriage and he takes her to Egypt to live. Tired of her simple husband, Bella becomes involved with brutish Baroudi. To get rid of Nigel, she begins slowly poisoning him. However, Nigel's friend Dr. Isaacson arrives in time to save him. Now Baroudi wants nothing to do with Bella, and neither does her husband. Totally alone now, the distraught Bella wanders off into the desert.

Zaza is a music hall star in Paris. She meets Bernard Dufrene and a flirtation develops into an intense love on her part. She is in despair when she discovers that he already has a wife and child. To visit them and announce herself as the mistress of the husband and father is her first idea, but the charm of the child restrains her. She cannot strike the blow and passes off her visit with an improvised excuse. She dismisses Bernard and returns to the stage, where she gains real fame as a dramatic artist. Once more he seeks her, but again the memory of the child saves her to her better self.