In Italy, in 1736, Pergolese is in love with Maria. But Maria's brother, Count Raniero, forbids his sister to marry a modest composer. Pergolese kidnaps the young girl, but they are caught. Maria is locked up in her castle while Pergolese dies in the convent that takes him in.

Honorin is the simple and naive stage manager of a traveling theatre troupe, whose one ambition is to once play the role of the cavalier in the opera "Francis I, or the Loves of the Beautiful Ferroniere". A hypnotist puts him to sleep and in his dreams he is transplanted to the days of the Renaissance. There, among other items, he is made a Duke by Henri VIII, fights a duel and survives a series of medieval tortures, while also bestowing some 20th century blessings on the court of Francis I.

When a criminal named King Fu who has terrorized a city substitutes himself for a stage actor who looks like him, the staff and spectators at that night's show think the actor is giving an unusually good performance.

A Scotland investigation into the sinister Lamberton family castle, where a servant was mysteriously killed and then a doctor strangled a few nights later. The servants are wrongly suspected and the truth provokes the suicide of the real culprit.

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.

Happily married to Sandrine, Pierre Fouques also known as Raboliot is the father of two young children. He would live a steady life hadn't he a passion for poaching, which gets him into a lot of trouble. Because of the nastiness of Bourrel, the gamekeeper, of the jealousy of other poachers, he becomes a hunted man who, in order to defend himself, is driven to commit a crime.

A village lost in the mountains where Catherine called L'Airelle's love affair takes place with a young doctor. Catherine's father is the local bonesetter whose wife threw herself into a glacier out of despair of love and whose body reappears intact twenty years later. In addition, the pharmacist of the country is accused of having seduced a young girl who is avenged by her mother. The bonesetter also dies, the village fortunately continues to live.

When Monsieur Crauqual, the supervisor, is found hanging, all wonder why this rather rich person decided to kill himself. And when a pupil is found hanging too, François and his friends decide to investigate. They are certain there is a killer within the walls of Collège François 1er and determined to prevent him from going on running wild.

The son of the Comtesse de Brévannes dies. She, who has never wanted to meet her daughter-in-law and who wants to take care of her grandson, goes to their house under the guise of a governess.