The thousand-year peace of the fairy world was broken by a strange invasion of darkness. The new guardian Ye Chen was selected in the Heavenly Tribulation Trial, but found that bizarre deaths and horrific visions occurred frequently across the fairy world. Supervisor Su Yao was ordered to assist in the investigation and joined forces with Ye Chen, but fell into confusion step by step. Netherworld Si Bai Wuchang provides clues pointing to a fallen old guardian - Lord Black Crow. As the investigation deepened, Ye Chen discovered that there was a more terrifying truth hidden behind the changes: the foundation of the fairy world was being eroded by unknown darkness, and the identity of the guardian was not glory, but the shackles of endless sacrifice. The Red Spirit boy mysteriously appeared and guided Ye Chen into the forbidden realm of the netherworld, looking for a solution in the cycle of terror and death. Ye Chen must face the darkness in his heart in despair and fear, and complete the ultimate trial of the guardian. In the end, he has to make a choice between self-salvation and the survival of the fairy world, to become a true guardian, or to fall into eternal darkness...
