In France in the 1800's, a middle class woman wants to have a better life than she has. Her husband is very kind, and generous, and brings home tickets to go to a fancy dance. She is worried that if she went, she would look poor.
Madame Loisel beggs to get a new dress, for the dance. So, her husband goes out, and gets her a dress that is 400 francs, that her husband saved up for a new rifle.
She thinks that she needs jewlerly to go with her dress. So she goes to her friend, that is wealthy to borrow some jewlery. As her friend is offering her some necklesses, Louisel wants something different. So then her friend shows her this other neckless, and she loves it.
After the party they rented a carrige to go home. She goes to change, and she notices that the neckless is gone. They spend hours trying to find it. They end up going around town, trying to replace it.
Since, they could not find the neckless, they decided that they would. Replace it. They find a jeweler That has, the neckless. They end up spending 36000 francs, which made them live in poverty for ten years until they were able to pay it off.
They end up paying off the neckless. They are old and have changed so much. They saw the lady that gave them the neckless, and Madame Louisel decided it would be a good idea to tell her the truth. Later they found out that the original neckless was fake.