At the start of the movie, cosmetic surgeon Flamont, his lover Nathalie, and sister Ingred are in Paris on Christmas night. A woman seeks revenge on Flamont for a botched surgery, leading to a series of disturbing events. Flamont and Nathalie plan to amputate a model's face for Ingred, involving a Nazi doctor. Meanwhile, private detective Sam Morgan searches for the model in Paris. Eventually, the plan goes awry when the model's face is too damaged for the surgery, leading to further complications. The movie explores themes of revenge, beauty, and horrific surgical practices.