David Compton leaves his expectant French girlfriend Louise Boucher, a dancer at the Moulin Rouge, for the war where he loses his memory. Building a new life from scratch after the war, he gets married in London. Louise, now a mother, thinks him dead. She becomes a famous dancer under the name Deloryse but falls gravely ill. One night, as David is in the audience of her show, he recovers his memory. After she learns that David is married to another woman, Louise puts her son in the care of Davids new wife and, accepting a dancing job at a party, she dies there of exhaustion and sorrow.