A story of a 25-year old Go Ha-jin who is transported back in time to the Goryeo Dynasty. She then wakes up in the body of Lady Hae-soo and finds herself amongst the ruling princes of the Wang Family.
- Genre: Drama, Sci-Fi & Fantasy, War & Politics
- Studio: SBS
- Keyword: based on novel or book, love triangle, politics, obsession, time travel, palace, forbidden love, royal family, family relationships, rivalry, romance, tragedy, royalty, historical fiction, king, period drama, death, tearjerker, medieval, power struggle, historical drama, reverse harem, mother son relationship, korean history, brother brother relationship, goryeo dynasty, court intrigue
- Cast: IU, Lee Joon-gi, Kang Ha-neul, Hong Jong-hyun, Baekhyun, Nam Joo-hyuk