In the distant future, human civilization has spread to dozens of galaxies. A cataclysmic event known as the "Great Silence" severed the connections between the colonies and plunged the human world into isolation and chaos. Three hundred years later, when the network connecting the galaxies was suddenly and mysteriously restored, people discovered that each planet had evolved its own social form in completely different ways.
Archaeological linguist Elijah is assigned to investigate the source of a mysterious signal that appears to come from before the Great Silence. Accompanying him is Seraphina, a translator from a strictly religious planet, and Star Map, an AI assistant that behaves more and more like humans. They soon discovered that this signal was not only related to the past, but also heralded a greater threat to come.
At the same time, strange "echo" phenomena began to appear in various galaxies - images and sounds from the past appeared in reality for no apparent reason, as if the universe itself was losing the boundaries of time. Ilya and the team must uncover the secrets behind these echoes, build trust among a divided human world, and face a shocking truth that could change the very nature of human existence.
