Loved by two men, frivolous Jasmine Grenfel is unable to decide between the bold Rudyard Byng and the more reserved Ian Stafford. Swept away by Byng's forcefulness, Jasmine agrees to marry him and the rejected Stafford goes to South Africa. Three years elapse, and Jasmine's unhappiness increases as her husband slips into dissipation and she is pursued by his private secretary, Adrian Fellow, who is also having an affair with Al'Mah, an exotic dancer. When Byng finds a love note written by Fellow addressed to Jasmine, he threatens to kill both his wife and secretary, but Stafford returns in time to prevent the tragedy. Later, Fellow is murdered and Byng finds a poisoned needle near the body, but before the murderer can be found, the Boer War breaks out and Byng goes to fight for his country. In battle, Stafford is killed and Byng distinguishes himself in the field, recovering from his former dissipation. Al'Mah, now a nurse, is fatally wounded and confesses that she killed Fellow. Jasmine, touched by the crucible of war, finally realizes that she has been responsible for her own unhappiness and makes a true commitment to her husband.