The Marquis de Sade, a famous inmate at the Charenton Insane Asylum, writes and produces a theatrical production with the asylum's inmates, including a paranoiac with a skin condition as Marat, a narcoleptic with melancholia as Corday, and a sexual manic as M. Dupere. The play retells a period in the French Revolution, culminating in the assassination of Jean-Paul Marat, and explores whether Marat was a friend or foe to the people of France.

Marat/Sade
In a gripping drama, a play unfolds within the walls of an asylum, reenacting the tumultuous final days of Jean Paul Marat, with patients taking on the roles of actors under the guidance of the infamous Marquis de Sade.