On the dark side of the world, tunnels in the Yin Ruins open up randomly, connecting countless strange realms with twisted rules.
Lin Chen, an ordinary student, is the only descendant of the ancient Demon Suppressor. On his eighteenth birthday, a black book called "Ember Volume" awakened in his palm.
It is a key and a shackle. Once a month, Lin Chen is forced to enter an exclusive purgatory woven by the memories of his ancestors; at the same time, the underworld corridors of the real world also open their fangs towards him.
Breaking the rules in silence, swallowing ghosts in the shadows. Lin Chen gradually realized that he was not only trying to survive for himself, but also on a path arranged by his ancestors, uncovering a terrifying truth that could collapse reality...