In his childhood, the only son of three generations of only sons, Yoo Weol, narrowly escaped a burning mountain with the help of the wolf spirit. Afterwards, to level the combination of yin and yang caused by change in his demeanor, his name was changed to Yoo Myeong, and his family would each time set up a ceremony of gratitude. Yoo Myeong who has fear of going up the mountain from memories of the incident, rashly went down the mountain, lost his way and met a big wolf.