Beneath the neon lights of Linchuan lies another world. Luo Jin, a novice mask-maker in the Nuo Spirit Bureau, gains the power to transform by devouring Nuo spirits, but every time he devours one, he loses a part of himself. Relying on a notebook and his sharp-tongued partner, Wu Yao, to remind him who he is, he struggles to stay alive. When the faceless mask at his waist is revealed to be a vessel sealing the ancient evil Chaos, he must decide whether to sacrifice himself to fill the rift in space and time before he completely forgets who he is. A man who is constantly losing his memories becomes the key everyone fights over, yet he chooses to remember others and offer himself to the seal. With increasingly spectacular transformation battles, the excitement never stops.