Hoguk wanted to become a taoist like the person who saved him from ghoul when he was young. So he enrolled to the school in Mt. Yangjiao but he had no talent or signs having energy. His future was without any hope.
One day, a group of ghouls that were looking for a special soul, noticed Hoguk’s special ability of hearing the sounds of the spirits, and started threatening him. They burned down the school of Mt. Yangjiao, and got Hoguk’s friends all killed horribly.
After baring surviving from there, Hoguk promised to himself that he will become a taoist to kill the ghouls and protect what is important to him