After the total degradation of humanity due to an overly comfortable life, people returned to a tribal way of life, and sociality was now based on faith in the unknown Siren - a sound of inexplicable origin that has been sounding for centuries. It just so happens that lack of education correlates with a reluctance to know and comprehend, so no one bothered to keep any records of the past. All that remains are the words of the prophets about the “terrible past.” Their life goal is to find the source of the noise, which has become a deity for them.