After venturing into outer space, humanity has built many planetary cities. Most of these cities were affiliated with the Interstellar Federation, which became the dominant force in the galaxy. Consequently, people believed that the Age of the Federation would endure for a long time. However, the situation shifts when a tribe called "Tytania" secedes from the Federation and receives the title of Lord from the Emperor of Vardhana. Tytania secures a victory over the Federation, asserting that the Empire cannot exist without them. Tytania places most of the Federal Territories under its control, establishing hegemony in the galaxy. Meanwhile, a war erupts between Euria and Tytania over their respective rights and interests. From that moment on, the galaxy enters a tempestuous period.