There is an undercurrent surging in the city, and the activities of low-level shadow creatures suddenly become extremely frequent and organized. Hunter Liao Yuya was ordered to investigate and found that behind all this was the resurgence of a long-forgotten evil sect, the "Eye of Shadow." Their goal is far more than just causing chaos, but they plan to open the "Shadow Gate" to the dark dimension through the ancient ritual of sacrificing 21 souls on the night of the new moon, and welcome the terrifying existence that can swallow reality--"The Devourer".
During an operation, Liao Yuya rescued Elena, a seemingly ordinary young woman, but unexpectedly discovered that she was the key to preventing this disaster. Elena's bloodline contains secrets related to her grandmother, a Shadow Eye traitor who is the only one who can control the artifact "Shadow Heart".
However, the crisis does not only come from the outside. There is a traitor lurking within the Hunter Association, making Liao Yuya suffer from enemies from both sides. To make matters worse, during a battle, he was corrupted by dark energy and was on the verge of transforming into a shadow creature. He went from being a hunter to being a target of suspicion among his own people.
Time is tight and we are beset by internal and external difficulties. Liao Yuya must work with trustworthy partners, expose the traitor, and make the ultimate sacrificial decision before he is swallowed by darkness, in order to stop the Eye of Shadow's crazy plan and save the city from complete destruction.
