In order to save his sister, Lin Feng accidentally got involved in an incident where a ghost claimed his life while delivering a mysterious order at midnight. When he was about to die, the ancestral black tower tattoo in his body awakened, awakening the ability of the "Nine Prison Guards", and subdued the first ghost servant - the soul of a warrior from the Warring States Period.
He discovered that he could unlock higher levels of the Nine Hell Tower by suppressing and subduing evil spirits, gaining more powerful power and ghost servants. From then on, he delivered food during the day and "sent" evil spirits back to prison at night. The mutated corpse in the hospital morgue, the hanged man in the old apartment, the painted-skinned monster in the office building... One after another urban ghost stories were put to an end under his hands.
As his abilities increased, he came into contact with the extraordinary world under the shadow of the city, and had an intersection with Zhao Qingxue, a detective investigating supernatural incidents. He discovered that behind all the incidents, there was an evil organization called "Netherworld Cult". This sect is planning a big conspiracy to open a passage between the world and hell.
In the end, in order to protect his sister and the city, Lin Feng launched a decisive battle with the leader of the "Netherworld Sect" and the ancient evil demon he summoned. He gathered all the historical ghost heroes that he had conquered (warring warriors from the Warring States Period, tiger warriors from the Three Kingdoms, swordsmen from the Tang Dynasty, etc.), And used the power of the Nine Prison Tower to restore the majesty of the "underworld", eliminate evil spirits in one fell swoop, and reshape the order of yin and yang. At the end of the story, Lin Feng finished delivering a takeout order and looked up at the night sky over the city, knowing that the duty of the guardian had just begun.
