Empress Celestine died in the hands of her husband because of her wrongdoings and evil deeds. However, when she woke up, she was inside a woman's body and she's in a different world. Turns out her soul transmigrated inside a rich, young woman with the same name and physical features. Her fiancee also looked like her past husband and so she changed herself in order to avoid her death.
"This time I will change my fate."