They get an invitation to a ball but Madame Loisel has nothing to wear so she is sad
She buys a dress and goes to one of her rich friends to get some jewlry and finds the perfect diamond necklace
they go to the ball and have a good time dancing and talking to others
after the ball they get a ride home and when they get in the carrage madame loisel notices that the necklace she borrowed is missing
Her and her husband have to work hard to pay off their debt for ten years, because they bought a replacement necklace.
One day Madame Loisel runs into her friend and her friend notices how much she changed. Madame Loisel tells her how she lost the necklace and bought a new one to replace it. And her friend tells her that the necklace was fake and didnt cost much.