The soul of a modern engineering man travels to the low-magic fantasy continent of Vandalia and becomes Carl Vinson, the exiled second son of Fir Manor in the northern border of the Byron Empire. In this frozen land where theocracy was oppressed and barbarians were raging, he neither believed in gods nor practiced magic. He only relied on a brass ruler in his hand to forcibly kick off the beginning of modern heavy industry.
Faced with the blockade of the Theocracy, the military rationing of the Governor's Mansion, and the bloodthirsty orcs of the Far North Wilderness, Karl used steel and gunpowder to build the highest physical defense line for the extraordinary myth of the entire continent at the gate of the black pine forest, which was decided by mortals.
