France, 1429: as the Hundred Years' War grinds on, a young peasant named Jeanne d'Arc begins hearing a voice she takes for an angel's, and gains power to match it. Kyuubey has quietly recruited magical girls for centuries, and Jeanne is only the latest candidate whose faith and conviction make her useful to him. Alongside fellow magical girl Riz Hawkwood, she takes up arms against English forces on the battlefield while adjusting to a fight against witches that the soldiers around her can't see.