On the Xuanlong Continent, strength is supreme and the law is ironclad.
In Muhai City, a young man named Ye Chen finds a blood-red token engraved with a Black Tortoise among his mother's belongings.
He doesn't know that it is one of the four ancient tokens that guard the realms.
Nor does he know the legend of immortality whispered in the darkness: gather all four tokens, sacrifice four people marked by fate, and offer a body of extreme yin or extreme yang at the center of the formation to seize another's body, be reborn, and steal eternity.
Before long, men in black come knocking.
An ancient scroll beneath a bookstall points to the missing token.
And behind his mother's gentle smile, there seems to be a secret more burdened with sorrow than the tyranny of the dynasty.
Gradually, he discovers that pain, death, and even the rise and fall of dynasties mean nothing to certain beings in this city.
All they want are sacrifices.
And Ye Chen, along with those around him marked by fate, is moving step by step from pawn to the heart of the formation.
When the first token awakens, the hunt has already begun.
Will you be the next sacrifice?
