In the world of Banishion, the Holy Hammer War is the mechanism by which divine forces destroy any civilization that grows powerful enough to threaten the natural world. Humanity has been on the receiving end twice already. The Fernran knights — survivors of the second Holy Hammer War that obliterated the continent of Riogende — rebuilt on the continent of Dictoria, attempting to live peacefully with nature and avoid triggering a third catastrophe. They fail. The Hammer falls on Dictoria as well. With no remaining options and their utopia still worth defending, the Fernran knights march to war again.