Zhou Ye, a mechanical maintenance worker at the bottom of Iron Curtain City, accidentally awakens the "Mechanical Devourer" Golden Finger, which can swallow machinery and convert it into black armor energy, and launch a counterattack from the scrap metal pile. In the early stage, he quickly strengthened by swallowing scrapped prosthetic bodies, slapping and bullying his own black boxing organization and prosthetic black market; in the middle stage, he was involved in the battle for the "Xuanjia Scroll", revealing the truth that his parents were hunted down by mysterious robots twenty years ago, and explored the cyber forbidden area to awaken the remnant souls of ancient Xuanjia; in the later period, he faced the "central mastermind" who controlled the Iron Curtain City, and with the ninth level of Xuanjia that swallowed millions of machines, he rewrote the rules of the cyber world that "machines are superior to humans" and became the "God of Xuanjia" who protects the city. The cool points focus on the high-frequency cycle of "devour-strengthen-slap in the face" and the contrasting counterattack of "mechanical scrap metal → black armor artifact".
