Just like Marry My Husband the fl dies and she goes back in the past to get revenge against her husband and family who treated very badly. She also marries the man (ml) her sister was supposed to marry to help her vengeance. It's a very nice watch if you enjoyed Marry My Husband or revenge dramas in general.
They both dislike each other at first and then start to like each other. It's a very cute and easy bl.