In ancient times, the gods and demons signed a blood contract on the stage of reincarnation, using eternal life as bait to let the demon king Su He suppress the killings between humans and demons for thousands of years. Three hundred years later, Su He found the human saint Shili imprisoned in chains in the cold pool. She was actually the reincarnation of the doctor he sacrificed his life to save. The lotus mark on the girl's wrist resonates with the scar on the demon king's heart, revealing the truth of the reincarnation curse - the so-called saint is just a pawn set by the gods.
When Shili touched the dragon-marked blood jade to awaken the memory of his past life, the sealed dragon bloodline in Su He was completely awakened. The human army uses the reincarnation formation to seize the blood of the saint, and the rebellion in the demon world and the resurrection of the sea demon under the sea break out at the same time. The two traveled through the rifts in time and space, faced their inner demons in the trial of the Seven Emotions, and solved the fateful chess game in the Six Paths of Reincarnation. In the end, it was discovered that the so-called Fallen Angel Contract was actually a lie weaved by the Gods to cover up their greed.
Su He used the dragon soul as a sacrifice to launch the God-killing array, and Shi Li used the power of the holy vein to break the shackles of reincarnation. When the laws of the Three Realms collapsed, they worked together to cut off the line of cause and effect and create a new world in chaos. At the end of the fateful reincarnation, only the body temperature of love and hate can burn through the eternal loneliness