Synopsis: In order to maintain the peace of the three worlds, the Emperor of Heaven sent Yang Jian to destroy Xuantian Luo Jing with the Howling Dog and Taibai Xingjun, but he was attacked by the red devil. After a thousand years, Xuantian Luo Jing will finally be born. Yang Jian, who was guilty of the crime, was once again ordered to go to the ley lines, but unexpectedly encountered the Howling Dog, who had lost his memory, and his former brothers turned against each other. In order to save the roaring dog, Yang Jian sneaked into the demon world with Taibai Xingjun and the demon hunter Qu'er of the Fanguan Office, trying to tie the roaring dog to the Holy Spirit Spring to retrieve the memory of the past.