In the shadowy underworld where mahjong thrives beyond friendly gatherings, Nangou finds himself drowning in a staggering debt of three million yen due to his gambling addiction. Determined to erase his financial sins, he stakes his very life in a high-stakes mahjong match against the menacing mafia. Despite his efforts, Nangou spirals closer to his demise with each move. Amidst this bleak scenario, a young fugitive named Shigeru Akagi bursts into the scene. Taking a leap of faith, Nangou entrusts Akagi with the game after a brief tutorial. The mafia, arrogant in their presumed victory, underestimates Akagi's innate gambling prowess and fearless demeanor. As the game unfolds, Akagi emerges as a formidable force unbound by the fear of death, destined to carve his name into the annals of legend.