Madame Loisel wants to have a better social life. So Monsieur Loisel go and gets his wife an invitation to a party.
Madame Loisel go and buys a dress with money she got from her husband that he was going to use to buy a rifle.
Then she goes and borrows a diamond necklace from her friend.
When they get home from the party they realize that they have lost the necklace. So The husband goes and gets his inheritance and gets loan from loan sharks.
Then they buy the necklace and they go to her friend and give it to her.
They suffer for ten years in poverty trying to repay their debt.Madame loisel finds her friend ten years later and tells her friend that they lost it and have been suffering for ten years because they bought a new necklace that looked the to repay for it. Her friend told her that it was a fake necklace and worth only 500 francs.