Bang Ho-yeong, a young head of household who was possessed by a spirit in a game he used to play for profit, angers the Queen and ends up being appointed as the 'Count of the Border Region.' The territory he received as his fief is nothing but a wasteland of ruins. On top of that, monsters keep attacking. The only thing he can rely on is the [Conversion] skill he received. He must turn monsters into allies to develop and protect his territory!