In the year 213 of the Earth's calendar, a protracted war broke out between the Tolia Empire and the Gadishu Federation due to territorial disputes. In the eighth year of the war, the elder Britin, who was exiled from the alien planet Kerreen, came to Earth. His arrival completely changed the fate of the two countries and countless people, and also gradually affected Britin's path to exile. As a new war breaks out, a new chapter begins. Heroes of flesh and blood, and epic war stories will all be presented one by one in the grand world of Petos War.