The story is set in Songhai City during the Republic of China era. Beneath the surface of this seemingly prosperous metropolis, there are hidden undercurrents, with countless crimes and secrets lurking. The Grand World, the largest money - laundering den in Songhai City, appears to be a place filled with singing and dancing, a venue where the powerful and wealthy indulge in a life of luxury and hedonism. However, the dark transactions and the ugliness of human nature behind the scenes are truly shocking.
