Flanders, Hispanic Monarchy, 1616. The inhabitants of the small town of Boom are busy organizing the annual local festivities when the arrival of the Duke of Olivares, who rules the country on behalf of the King Philip III of Spain, is announced. While the male citizens cowardly surrender to panic like rats on a sinking ship, the brave female citizens, led by the bold wife of the burgomaster, decide to become the best hosts the Spaniards can ever meet.
Loursat, a lawyer, lives with his daughter Nicole in a sinister and vast bourgeois residence. Abandoned for nearly twenty years by his wife, the brilliant lawyer has sunk into alcoholism and his relationship with his daughter is virtually non-existent. However, one day the corpse of a stranger is discovered in the residence of Loursat. Nicole, who frequents a gang of young people who escape boredom by stealing cars and other objects, is immediately suspected.
In France, in 1930, a supervisor of a boarding school for young offenders seeks to awaken the music by forming a choir, despite the skepticism of his boarding school director.
