In the shadows of society, mahjong transcends a mere pastime to a high-stakes battleground. Struggling with a staggering debt, Nangou risks everything in a fateful mahjong duel with the mafia. As his fortunes dwindle, a young fugitive, Shigeru Akagi, crashes into the scene. Entrusting the game to Akagi, Nangou witnesses a fearless prodigy challenging the underworld's elite. With an aura of invincibility and a defiance of mortality, Akagi emerges as a legendary gambler in the making.