In the Karen Empire, where steampunk and mysterious forces intersect, there is a terrifying power called the "Forbidden Power" that can deprive any extraordinary person of his abilities and reduce him to a mortal. The protagonist Hu Mo was once the youngest "mechanical master" in the empire. He mastered steam technology that could subvert the country. However, he was framed in a conspiracy, his abilities were completely banned, and he was exiled to a border mining town.
No one thought that the ban did not really eliminate his ability, but instead activated the sleeping "Steam Core" in his body - a forbidden creation from the ancient civilization of the Gods. This creation can absorb steam energy, perfectly integrate the machine with the human body, and give the user "unlimited mecha" capabilities that exceed conventional ones.