It's been 65 Years since worlds converged, since then, empires have crumbled and risen, previously thought lost civilizations and peoples re-discovered. One of which is Pelasdeania, still carrying the torch of Rome to this day. After a particularly violent conflict in the continent of Makatil, one of the many gods of this new two-dimensional world has proposed a new "game" where nations compete and display their military might without the need for a proper conflict. One of these games is the Tankathlon.

Alba is a newly arrived student in the Borealia Military Academy, having shown promising results, she has been selected to lead part of the Pelasdeanian University League's Tankathlon team . . . Alongside the person she has come to hate the most ever since her arrival.