In Vienna in 1957, Lucia came to an opera hotel with her husband. She inadvertently recognized that the tea room at the service counter was actually the former Nazi concentration camp military doctor Max. Max also recognized that the other party was only 14 years old. "Female prisoner". Time has passed, and now Lucia is married to a famous American music conductor. This time, Lucia accompanied her husband to Vienna to perform the opera "The Magic Flute". During the war, Max killed many people in concentration camps, and his hands were covered with innocent blood. After the war, he lurked in this hotel as The Night Porter. A group of hidden fascist bandits headed by Klaus often came to this hotel for gatherings. They searched for witnesses who had stayed in the concentration camp and killed them. The accidental encounter between Max and Lucia reminds them of an unusual relationship in the concentration camp: The military doctor and photojournalist Max discovered the beautiful Lucia among a large group of naked prisoners and became interested in her. He treated her as his own plaything, used her as a living target, and made her run around naked under his gun. After he injured Lucia, he bandaged her with care, and even sucked the pus and blood from her wound with his mouth. For convenience, Max put Lucia in a single female cell, and made various kinds of sexual provocations on her, trying to arouse her sexual instinct. For all this, Lucia did not show any resistance, on the contrary, she was as soft as a sheep. At a Nazi party, Max wanted Lucia to show off. Under his arrangement, Lucia was topless, wearing a Nazi black military cap, imitating the dancing posture of movie stars, and acting coquettishly in front of Nazi officers. Her performance won the applause of the officers. As a reward for her, Max asked a soldier to bring a big box to her and opened it to see that it was filled with a bloody head. It turned out that Max thought of the "Salome" story and chopped off the head of a prisoner who was always pestering him to change rooms. Looking at the bloody gift, Lucia was stunned for a moment, and soon returned to normal. More than a decade later, the executioner and the victim again met unexpectedly in this beautiful city, and both of them were shocked.
Max went to the opera house to watch the show, and happened to sit in a row behind Lucia. The restless Lucia turned her head from time to time, and met Max's surprise eyes. After returning to the hotel, Lucia wanted to escape the city immediately, but her husband could not get away before the performance was over. After the performance, they planned to go to Frankfurt, but before leaving, Lucia dismissed her husband because she was in poor health. After sending her husband away, Lucia went to a thrift store and bought a lace-up underwear, which was almost exactly the same as the one Max gave her in the concentration camp. Lucia returned to the hotel and Max came to her. Room. An inexplicable lust attracts the two, making it difficult for them to control themselves. At this time, Klaus and his gang found a witness who knew Max, who was a chef in a restaurant in Vienna. After Max learned that he had clues about himself and a female prisoner, he took advantage of it to kill people during a fishing trip. The close relationship between Max and Lucia caught Klaus's attention. He sent someone to watch outside Lucia's door. Lucia also overheard a secret meeting of the Nazis. The two were in a critical situation, so Max took Lucia and hid it in his own home as a precaution. Knowing that Lucia was also an important witness in the concentration camp, Klaus ordered Max to hand him over, but Max refused. At this time, Lucia's husband was also looking for someone through the police. Klaus ordered his men to secretly surround Max's apartment. Max bought a lot of food and hid at home with Lucia. Food is getting less and less, but sexual hunger and thirst have replaced the hunger in the abdomen. Regardless of hunger, they have sex in the bathroom frantically. Klaus gave the ultimatum, and Max ignored it. He knew that he was desperate, so he put on the SS uniform and Lucia put on the lace underwear. At dawn, the two walked hand in hand on a bridge over the Danube. At this time, two gunshots came from behind them, and the lovers fell in a pool of blood.
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