What can a piano bring to the world? The Taoist priest of Jiuxi Temple accepted a disciple and taught him what he had learned throughout his life, hoping that he would be righteous and support justice. The young apprentice lived up to his trust and joined the Immortal Sect at the age of thirteen, but encountered a demonic path and started a war between good and evil. After many hardships, Yijun and his younger brother finally joined forces with others to drive away the devil, and made an agreement to end the disaster.