Doctor Sayer, esteemed director of a philanthropic institution, hides a misogynistic and sexophobic personality to which he gives vent to weekends, dedicating himself in his isolated villa to sadistic games in the company of professionals expert in satisfying similar inclinations and staging their death in ways more imaginative. Taking advantage of the visit of one of his employees, Mary, decides to move from fiction to reality, imprisoning the woman and subjecting her to physical and psychological torture.