In this wonderful world, there is a creature called "Devil". When they encounter battle or use certain spells, part of them will fall off their bodies. Demons are regarded as symbols of evil by people, and their body parts are also disgusting things.
Three hundred years ago, there was a weirdo known as the scientific madman Claude. He collected the scattered bodies of demons without hesitation and used the power of technology to create the patchwork demon Gerchu. At the same time, he lost his beloved wife's soul.
As a result, many demons chased Ge Chu, an artificial demon created by taking the parts of many demons. While searching for his own secret book, he met Feng Keling, a high school girl.
But the true identity of Ke Ling's brother, Jiu Zuo, is actually Ger Chu's maker, Claude...