One the Woman
Jo Yeon-Joo is a corrupt prosecutor. Due to a case, she loses her memory. She begins to live as daughter-in-law Kang Mi-Na of a chaebol family, who looks just like Jo Yeon-Joo. Meanwhile, Han Seung-Wook is the son of a chaebol family. He hasn't gotten over his first love. He gets involved with Jo Yeon-Joo, who lost her memory.