The story begins one rainy evening backstage at Margo Channing's current smash hit on Broadway. A woman named Eve is waiting backstage to meet her 'idol', the aging Broadway Star. It all seems innocent enough as Eve explains that she has seen Margo in every performance of the current play she is in. It is only the playwright critic Addison DeWitt sees through Eve's evil plan, which is to take her parts and fiance...