In the romantic days of the Eleventh Century the prologue of this picture shows us, Sir Errol, a victorious knight, returns to the castle of his liege lord, the Baron Edward, where he renews his vows with Lady Maud, his betrothed mistress. During Sir Errol's absence from the realm, the Baron has married Lady Elfrieda, daughter of an impecunious nobleman. Edward loves Elfrieda, but for her the marriage was solely one of expediency. She loses her heart to the handsome young knight.