Kangchi (Lee Seung-gi) is a half gumiho (a fox with nine tails) and half human. He learns about his true origin after discovering his new-found powers. His mother is human while his father is the guardian god of Jiri Mountains. Kangchi sets out to find the Gu Family Book that reveals the secret about becoming a human. Martial artist and archer Yeo-wool (Bae Suzy) joins him in investigating a series of murders. Will Kangchi be able to fulfil his desire to become human? Kangchi, the Beginning, also known as Gu Family Book directed by Shin Woo-cheol and Kim Jung-hyun, is a 2013 action romance historical series.