In 2099, a series of massive earthquakes struck Blue Star, and tens of thousands of pits, large and small, each over ten thousand meters deep, suddenly appeared around the world.
That same year, paranormal incidents became increasingly common worldwide. Humans with supernatural abilities appeared everywhere. To deal with this supernatural crisis, nations began forming their own superpowered forces, while countless independent groups emerged among the people.
As superpowered criminals and paranormal murders multiplied, the various forces traced the phenomena to their source and made a shocking discovery: every supernatural occurrence was caused by a population of life forms beneath the ten-thousand-meter-deep pits, which had never been detected before. Meanwhile, the veil over humanity's ancient legendary civilizations was gradually lifted as people continued their investigations.
