Montmorency, a young man who is the son of a noble but devoted to the study of magic and alchemy, lives a hectic but fulfilling life at the Royal Knight Training School in Paris, surrounded by many knights and female knight candidates, such as Richemont, the sister of the Duke of Brittany. However, with the defeat in the Battle of Azancourt, the fate of France and them has completely changed. After the fall of Paris, the Knight Training School was closed. Montmorency, who lost everything and became an alchemist on the run, met the mysterious girl Jeanne d'Arc in the village where he fled...