Catherine is a maid who works for the local mayor and is also a victim of the mayor's wife and friends' sarcasm. In the first scene, she was asked to get the key to the mayor's desk at a cultural party attended by her wife, which was very clear. She was harassed by all the elites who didn't like being harassed by maids. In this scene, it is also clear that the wife had a secret lover who later challenged the mayor's political career and used Catherine as a scapegoat for his ambitions& quot； This function; Bad guys "; Renoir himself played the role. The mayor likes Catherine very much and is worried that she will suffer more harm from his wife. He demands that his sister give her a position in Catherine's house. My sister has a son who suffers from tuberculosis (played by Dieudonne). He was too weak to succeed in front of the women in the class, but Catherine naturally fell in love with this fragile man immediately. While the rest of the town was celebrating the carnival, he passed away after kissing Catherine. The kissing scene in front of the window is intertwined with fireworks, making it a wonderful moment in the silent drama. Catherine is mourning and has been driven away by the mayor's wife and her friends. It is indecent for a maid to mourn and show public affection towards someone who does not belong to her own social status. Catherine's emotions are a chaotic factor in the social order of the wealthy. Catherine left and hid in a cheap hotel in the city, where she was also bullied by a local pimp who believed she was easy to exploit. Accidentally, Catherine was seen in the hotel window with a pimp, which gave her even more reason to be gossiped about by the elites. When she returned to the village to find a job, she was rejected everywhere, even by the local Christian relief organization chaired by the mayor's wife. She met the mayor again and was shocked by the attitude of the town. He brought her home again and promoted her to secretary. The wife was naturally very angry and left her husband and mother to live together. This is the beginning of a smear campaign against the political credibility of the mayor. The lover of the mayor's wife sees what is happening as a once-in-a-lifetime opportunity and publicly attacks the mayor's moral character (what's new under the sun?) Catherine wants to avoid the downfall of her protector, leaves the mayor, and explains herself in a note. She was hiding in an old tram while the mayor was frantically driving around looking for the girl. Two homeless people were kicked out of the bar and pushed the tram dejectedly, so it began a crazy race, running back and forth on the mountain towards the bridge and valley abyss. Catherine has accepted her death, but the mayor made a timely choice for her. The social impact of his choices has not been shown, but it is evident to everyone.