A nine-tailed fox named Lee Yeon has just arrived in the city. He can take human form, and he cleanses people's minds while stirring up chaos. Nam Ji Ah hosts a show about urban myths and will go to any length to feature a strange or even risky subject. She sets her sights on Lee Yeon, who seems almost too perfect: strikingly handsome, clever and fit, an ideal guest for her program. Lee Yeon has a half-brother, the magnetic Lee Rang, said to be the most dangerous gumiho living among humans. Although he is half-human himself, Lee Rang holds all of humanity in deep contempt. The film blends action, drama, fantasy and romance.