In the dusty area of Jingjing, mountains of scrap iron and monster beast carrion piled up. Lin Yansheng lay down in front of the body of a split-backed python, and dug out the dark red core with trembling fingertips. He is a gray-level scavenger, and he is branded "Son of Disaster" - this mark means that no Kung Fu Pavilion will be open to him, and the Martial Arts Monument determines that his bloodline score is only D. The moment the core enters the throat, the beast mark pierces into the soul like thorns. The second before his consciousness collapsed, he bit the tip of his tongue and used his blood to draw a restriction in the void. It's not devouring, it's contracting. The long-dead Split Spinal Python opened its green eyes and turned into a tattoo and entangled itself on his wrist. "You're crazy." Yin Ruotang, who was also a scavenger, looked at him in shock, "Contracted monster? Once the monster dies, your soul will be permanently damaged!" Lin Yansheng wiped the blood from the corner of his mouth and smiled: "If I weren't crazy, I wouldn't even be qualified as a monster." Since then, there has been a freak in the dust area who hunts monsters but does not swallow the core. He has contracted with more and more low-level monsters. Although the beast marks are piling up, they have not gone berserk due to the checks and balances of the contract. The disciple of the aristocratic family in Tianxi District had ancient skills in hand, but he led an army of monster beasts to the edge of the first layer of the dome. However, the Martial Arts Dome launches a "blood rain" every twenty years, extracting the life essence of all the berserkers in the city and injecting it into the bodies of those with SSS bloodline. Lin Yansheng suddenly realized that the beast marks in his body that were suppressed by the contract might be the sacrifices he wanted most in this bloody rain.