Tangeum plot
Hong-rang was born into a wealthy family and was supposed to inherit his family's influential company. But when Hong-rang was 8 years old, he disappeared without a trace. His older stepsister Jae-yi, however, always believed that she would find her brother one day. Hong-rang's mother Ming Yeon-ui is now the most powerful person in the family business and has always had a hard time with her son's disappearance. But suddenly, 12 years after his disappearance, Hong-rang reappears. He is now 20 years old, but he does not remember anything from before his disappearance. This makes Jae-yi suspicious. She does not believe that he is the real Hong-rang.