Charlotte Corday

France, 17th century, during the reign of Louis XIII. When a dear friend, the Duke of Nevers, is treacherously assassinated by a powerful relative, a skilled swordsman, the noble Henri de Lagardère, seeks his rightful vengeance as he tries to protect the innocent life of the duke's last heir.

Tucked away in his castle, a hypochondriac inventor plays generous host to a revolving cast of wacky guests. But to pay off his mounting debts, he must sell either a powerful businessman or a rich gypsy on his latest creation: a laser skywriter.

A singer tries to get her daughter out of the grip of a guru by becoming a member of his cult herself.

Melanie can't stand her life anymore, a source of too much suffering. One day she decides to end it all and sets off in a stolen car on a suicidal race on the highway. But at a gas station, a somewhat eccentric old woman discreetly slips into the vehicle. Garance has a habit of randomly taking a seat in other people's cars, with only her suitcase and a binder bearing the title "The Flight Ceremony of the Northern Gannet". Melanie's suicidal plans are thwarted by this nuisance, whom she does not hesitate to inveigh against. But anger soon gives way to affection.

Nathalie, traumatized by the death of a child she had to look after, is hired by Marti to take care of the little Serge, his son. The boy is abnormal, immured in silence. Nathalie brings him out of his shell and becomes attached to her protege. She feels his life is threatened: serious incidents happen. For Christmas, they are alone, and the child mysteriously disappears. She discovers him in the basement, locked up in a chest.