The story takes place at the end of the "Great Wilderness Calendar" when spiritual energy is revived and sects are numerous. The spiritual veins of heaven and earth are gradually drying up, the human race is declining, and monsters and beasts are rampant. Xiao Yi, a young man from a mountain village, was abducted by a golden-feathered eagle to a cliff eagle's nest while collecting herbs in Yunyiling. He unexpectedly obtained the "Mysterious Sutra of Ten Thousand Spirits", the core inheritance of the ancient beast-controlling sect that had been lost for thousands of years. He first contracted a spiritual bird with his mortal body, changed his fate against the will of heaven, and gradually awakened the ability to control all beasts, communicate with hundreds of spirits, melt demon blood, and refine soul seals. As his strength increased, he became involved in rivers and lakes disputes and dynasty strife, and even discovered that his bloodline was actually related to the massacre of the ancient "Beast-controlling Holy Clan" - and the man behind the mountain-burning and massacre of the clan was currently entrenched in the "Taixu Sword Pavilion", the head of the nine immortal sects today. The main plot revolves around the three-fold progression of "seeking roots, proving the truth, and breaking the situation", and finally shakes the shackles of heaven with the resonance of all beasts, uncovering the shocking conspiracy that "the exhaustion of spiritual veins is actually a man-made seal".
