Jack Craigen, an engineer who has just finished a construction job in South Africa, returns to New York. There, at the home of his Uncle Cannell, he meets stage-struck society girl Helen Steele and her playwright fiancé Tracey. Scheming to win the lead in their new production, The Siren , Helen wagers Cannell and Tracey that she can vamp Jack--a notorious woman-hater--and have him propose to her in a week.