Choi Kang Chi is a legendary gumiho and is half-human and half-beast. He is the son of Gu Wol Ryung, the guardian spirit of Jiri Mountain, and Yoon Seo Hwa, an human being. He was raised by the Park family after having been picked up from the river. Kang Chi is an outspoken character who's full of curiosity. After realizing that he is half-human and half-beast, he begins his personal journey to adjust to this new reality. Dam Yeo Wool is a master of martial arts and archery. Yeo Wool is an upright character who really values the Three Bonds and Five Relationships in Confucianism and becomes an instructor at a martial arts center at a young age. They meet and fall in love and work hard to face all the struggles life throws at them.