The French peasant girl becomes an ambassadress of heaven, gifted with second sight and the power of working miracles. She not only leads the French troops in battle, but she herself fights with a magic sword and kills English soldiers with the ruthlessness of a veteran in slaughter. Through it all, however, she is supposed to remain a tender-hearted and lovable maiden, such as the highest officers of France may wish to marry. By the command of the Holy Virgin, from whom her mission and power derive, she is bound to refrain from all earthly love. A momentary tenderness for the English general, Lionel, which leads her to spare his life, presents itself to her conscience as an infraction of the divine command. She is overwhelmed with remorse and loses all her power. Arm and soul are paralyzed. Taxed by her superstitious father with witchcraft, she cannot find speech to defend herself and imagines that a thunder-clap is heaven's testimony against her. Then she wanders about as a helpless and disgraced fugitive and is captured by English soldiers. With fettered hands she is compelled to witness a new battle, in which her countrymen, deprived of her aid, are about to be worsted. But through adversity she has been purged of her sin. Her self-confidence returns, and with it her miraculous power. By the efficacy of prayer she breaks her chains and rushes into the fray. Her reappearance brings victory to the French arms, but she herself is mortally wounded and dies in glory on the battle-field.