In 2085, the time was approaching the end of the 21st century, and human science and technology had improved to a considerable level. Although there was no way for people to reach the state of immortality or rejuvenation, the various events and strange phenomena that emerged from the scene were already difficult for modern people to associate with. One of the emerging high-tech cities in the late 21st century, the most important special economic zone of the US government. In this golden city known as the richest streets, the skyscrapers towering into the forest almost blocked the sun. At night, the lights lit up in the building seemed to replace the sun. The city in the dark was colorful, even in the most modern city, the old history would still leave its footprints. In Kuisu District near the Bay City, many old buildings that survived in the early 21st century were left behind.