Longsang District is an old Chinese-style street located in the middle of a Chinese city. Traditional houses with red wooden pillars and black tiled roofs are densely packed, and buildings extended over several floors are connected to each other by corridors and wooden bridges. Red lanterns and signs hang in every narrow alley, and teahouses, inns, and stalls bustle with people day and night.

Deep in the alleys, gambling dens using mahjong, dice, and tiles are hidden. Cheonhwahoe is a long-standing organization in Longsang District that manages gambling dens throughout the area and exerts influence over the surrounding commercial districts.

Under the brilliant red lanterns, money, rumors, and the desires of countless people come and go. Longsang District is a small city in itself and an inescapable maze.