summary Raoul d'Harmental, young aristocrat came to Paris in 1711, is an adventurer rather touchy and impetuous. Having shown the last victory of Louis XIV appointed colonel on this occasion, D'Harmental is after the death of King involved the conflict between the party of the princes and the legitimate bastards. Philippe d'Orléans, legitimate prince, regent of France's Louis XV while still a child. D'Harmental first sees withdraw his regiment, which leaves no upset him. After his regiment is his mistress, Sophie d'Averno, the regent takes away. The knight is then ripe for conspiracy. The duchess, whose husband, legitimized son of Louis XIV, was deprived of his rights by the regent, makes proposals in this direction. D'Harmental must remove the Duke of Orleans and take him to Spain, the project for which he hires the services of Roquefinette captain, former military disillusioned. Waiting for the right moment to removal, hidden in a dorm room, Raoul d'Harmental désoeuvré looks at his neighbor across: a charming girl and good education, who plays the harpsichord and beautifully draws . Guessing at the Rock Bathilde a noble origin despite a modest life, Raoul quickly falls in love and manages to make contact with her. Orphan, Bathilde was collected and raised by Jean Buvat, writer and calligrapher in simple and generous spirit. The regent removal plan fails. The conspirators then trying to overthrow the regent by political means, with the support of Philip V of Spain and grand-son of Louis XIV, causing the meeting of the States General. It's the "man" Buvat, involved in the plot as a copyist, which allows the minister to the regent and Dubois thwart any conspiracy. The conspirators, distraught, plan an ultimate removal, where Harmental new failure is captured and sent to the Bastille. Bathilde, desperate to see her fiancé sentenced to death, managed to introduce him to the regent, whom she recalls the services rendered by his father Albert du Rocher. Philippe, nicknamed the debonair ultimately frees D'Harmental who marries Bathilde. The other conspirators, the Duke and Duchess of Maine in the first place, will be released a few months later.