Ten thousand years ago, the Immortal King Mu Yun was betrayed due to possessing the Chart of Extermination, and after a remnant soul slept for ten thousand years, it awakened in the infamous "useless Mu Yun" of the Southern Cloud Empire in the Tianyun Continent. Upon awakening, Mu Yun was deliberately challenged by his student Miao Xianyu. Mu Yun easily resolved Miao Xianyu's traps and deduced more alchemy techniques, which impressed the alchemy master Mo Wen waiting outside. Returning home, Mu Yun learned about the engagement with Miss Qin Mengyao from the Qin family. Qin Mengyao was afflicted with cold poison and would not live past twenty, and the engagement was mainly for the benefit of the Mu and Qin families. However, persuaded by Mu Linchen, Mu Yun agreed to the marriage arrangement under the condition of practicing alchemy. After refining the Bone Cleansing Pill, Mu Yun experienced his first breakthrough in cultivation. Mo Wen often came to seek Mu Yun's guidance, while Qin Shiyu wanted to invite Mo Wen to treat her granddaughter Qin Mengyao. Mo Wen hinted that Mu Yun should give it a try, and by a twist of fate, Mu Yun awakened the Chart of Extermination within him and discovered that the cold poison within Qin Mengyao was actually the Ice Phoenix Divine Soul. Mu Yun cured Qin Mengyao, and the power of the Ice Phoenix Divine Soul propelled her cultivation to new heights. After witnessing Mu Yun's abilities, Qin Mengyao became curious and interested in him, thus becoming a mentor at Beiyun Academy, teaching the same class as Mu Yun. At the same time, Dongfang Yu, who failed to pursue Qin Mengyao, ignited a sense of jealousy and hatred, vowing to be enemies with Mu Yun. Mu Yun used the Chart of Extermination to break through his cultivation and went to the Beiyun Mountains for training, with Miao Xianyu insisting on accompanying him. Along the way, Mu Yun single-handedly hunted down a dozen purple-haired hunting wolves, astonishing Miao Xianyu. Meanwhile, someone had commissioned assassins from the Liu Mountain Four Fiends to tail Mu Yun and prepare to strike during his moments of weakness.
