Leontine Maddern is a self-centered, unscrupulous actress, while her twin sister Leona is a serious and compassionate artist. Because of a scandal in which Leontine was involved, Leona uses her mother's maiden name of Rosalie Byrnes. Rosalie meets and falls in love with Lt. Gerald Cromwell and after they marry, Cromwell is sent overseas. His family, desiring that Gerald marry wealth, approaches Leontine and, mistaking her for Rosalie, offers to buy her off, and she accepts. Gerald, now in France, learns that his wife is divorcing him and sends her a reproachful letter. One morning, hysterical and disheveled, Leontine bursts in upon Rosalie insisting that she has killed her lover Vasco Lamar and left her purse behind as incriminating evidence. When Rosalie courageously goes to Lamar's apartment to retrieve the damning evidence, she discovers her husband there. Gerald explains that he has learned the truth from Leontine, including the information about the Lamar killing. After removing the evidence, they find that Lamar is actually alive and the reunited lovers leave on their honeymoon.
—AFI