Jeanne De Pincret refuses to marry Viscount Haussy De Villefort, having discovered his frivolity. After a duel against the Duke De Montgobert, whom Louis XIV recommended to Jeanne, the king forced De Villefort to marry Jeanne, then sent her to war. Separated from her husband, Jeanne discovers that she loves him.
The knight Henri de Lagardère wants to avenge the death of his friend, the duke Philippe de Nevers assassinated by the prince de Gonzague, a few years before.