It is set in Paris, France in the 19th century. A young women named Madame Loisel dreams of a better life style in a higher class.
Monsieur Loisel gets his wife an invitation to a party but she doesn't want to go because she doesn't have a nice dress.
Monsieur Loisel buys her a new dress and she barrows a necklace from her friend.
She has an amazing time at the party but when she gets home she notices that the necklace is gone.
Her husband goes looking for the necklace but has no luck so they go looking for days and end up getting loans to buy a new one that costed a lot of money.
They are in debt and spend 10 years getting out of debt. Madame Loisel tells her friend that she lost the necklace and bought her a new one. Her friend then tells her that the necklace was a fake and that she just bought her a real diamond necklace.