Gu Family Book is a 2013 South Korean television series starring Lee Seung-gi and Suzy. The fusion martial arts action historical drama is about a half man-half monster who is searching for a centuries-old book that according to gumiho legend, contains the secret to becoming human.Filmed at MBC Dramia in Gyeonggi Province, the series aired on MBC from April 8 to June 25, 2013, on Mondays and Tuesdays at 21:55 for 24 episodes.PlotAfter their nobleman father is unfairly accused of being a traitor and killed, Yoon Seo-hwa, her younger brother Jung-yoon and their maid Dam are sent to a gisaeng house. Seo-hwa's first "patron" will be Jo Gwan-woong, the man who betrayed and killed her father. Just before meeting him, Dam swaps clothes with her so that she can run away, chased by Gwan-woong's men. Gu Wol-ryung, a mystical forest protector and gumiho, finds Seo-hwa unconscious and, fallen in love with her, protects her. When Seo-hwa wakes up, she too falls in love with him and marries him after being told that both Dam and Jung-yoon were able to run away and are safe. In actuality, Jung-yoon has been hanged, whereas Dam has committed suicide. Wol-ryung, unable to tell her the truth, lied to her and did not tell her that he is a gumiho.