In 3015 AD, humans had already left the solar system and faced the universe. At the 99th Interstellar Alliance Conference (held once every hundred years), the election was passed, making the ancient earth the 256th planet to join the Interstellar Alliance. In this era, all species in the universe face the same problem: How to survive? As well as the enemies of most species - all kinds of endless "trouble". Yes, we can only call them "trouble", because it is impossible to judge what kind of creatures they are from their appearance and characteristics, but some "trouble" have names.
In this era, darkness and light coexist. Although the war continues, there are also moments of peace. People have long adapted to working hard to make themselves and their families happy in the limited time. Heroes emerge from troubled times, and this century will be called "the prosperous age of the ages" by future generations.