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.

During the Directory, a handful of royalists tried to get the Dauphin Louis XVII to escape from the Temple.

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.

A young pilot, Martin, applies for the Ecole Militaire de Salon. He is accused of having caused the accident of one of his bosses, his career is then threatened.