Jessica and her mother , Lee Mi Sook, are running away from a abusive man named Mr. Chang that her mother have been in a relationship with and lived with. When Mr.Chang realizes that the two ran away with his diamond ring, he sends gangsters to catch them. While running away from the gangsters, Jessica runs into Yoona in a toilet stall on the train and tells her to keep the ring for her. Jessica's mother goes and gets it back at Yoona's house and manages to get Yoona's father to ask her for marriage. The two daughters are forced to be sisters through marriage. Both girls have feelings for Yuri who left to join the army and comes back 7 years later. Yoona tricks Jessica into believeing her and Yuri have a relationship. Yoona's father soons die and is left in the hands of a mean stepmother, an aloof stepsister, and a large inheritance. The classic tale Cinderella through the eyes of, Jessica.