In an elegant yet decaying château in 1930s France, a young maid named Celestine arrives with the hope of leading a better life. Willing to adapt to the whims of her new employers, she finds herself trapped in a world of secrets, obsessions, and repressed desires. The family she serves is unconventional; the master of the house is a cynical and bitter aristocrat, while the wife, though seemingly submissive, harbors her own arsenal of intrigues.
As Celestine settles into her role, she begins to uncover the dark dynamics underlying the household. Tension mounts as she becomes involved with various family members and the intriguing gardener, who draws her in with his rebellious spirit. But beneath the surface of this elite family lies an air of depravity that becomes increasingly palpable. With her wit and cunning, Celestine becomes a privileged observer of the hypocrisies and torments that plague her employers.
In the midst of social intrigue and high-class oppression, Celestine seeks to reclaim her own identity and desires. The story intertwines themes of class struggle, feminine power, and the shadows of the past, as Celestine faces decisions that will lead her to question her role in a world where appearances can be a deadly trap. As the drama unfolds, the young maid must decide how far she is willing to go to attain the freedom she longs for.