Nejikomi Mirai's father was a heavy gambler, every night he will be at a panchiko or a casino gambling, but through his effort and greed not even once have he, tasted victory. Not paying his loaning, the Yakuza are now under his tail. Knowing that his life and family are in danger, he fleet to a third rate world with his family trying to redeem himself, but as they reach the country he fell ill and died.
A few years have passed and Nejikomi's has gotten used to the new country they are now living in. Nice neighbors and good friends, every day was peaceful, but that peace was fake since the Yakuza has found them. Taking his family as hostage, the Yakuza give Mirai a choice to save his family, but it revolves about him joining a death game called Death Zoned.
Gambling his life, Mirai will need to lie, cheat and out cheat other opponents if he ever wants to get out alive and save his family.