When Helena Fenster's twin sister jilts her fianc Rand Mallon--the man Helena herself loves--Helena is surprised when Rand is prepared to marry her in her sister's place. Yet how can Helena marry the man she adores when it is obvious that, for him at least, one woman is as good as another? Soon, they are walking down the aisle, but Helena vows to convince her husband she is not simply a mirror image of her sister.