Set in 1885, The Mad Women’s Ball follows upper-class Eugénie Cléry, who is forced by her family into Pitié-Salpêtrière, a neurological clinic in Paris after she confided in her grandmother and her brother that she sees spirits. Eugénie, at first, feels out of place in the falling-apart institution run by Dr Jean-Martin Charcot and head nurse Geneviève; the latter helps Eugénie adjust to her new circumstances. As the film’s title suggests, the residents at the clinic look forward to the annual ball for which they get to dress up, be merry and dance all night long.