Da-eun is a 26 years old girl. She had everything .her life is perfect. one day she had an accident .and after that she found herself in the Joseon dynasty and met Ji hoon. Ji Hoon is a crown prince. He is very handsome But, his personality is cold and rude. Although he is a crown prince, he is very lonely and has a dark past. Can Da-eun change his life ?? Can they both find love and happiness??