3 years after the ultimate life-or-death game with Teiai Group, Kaiji was entrapped by Teiai and again back in the underground, forced to do hard labour. One day, Kaiji wins a bet to get out of the underground with 1 million yen, and promises the other workers that he will save them. But to do so, he only has 14 days and needs 200 million yen! Kaiji meets his former rival Tonegawa and learns that there is a chance to turn the tables in the game. It was a monster casino machine that will make 1 billion yen if you win...

Naoki works as a not so popular host at the host club Akegarasu in Shinagawa, Tokyo. His repayment day is coming soon and he has prepared 10 million yen to pay off his debt. Naoki has a party with his co-workers to celebrate this event, but, when he wakes up the next night, he finds that his money is all gone. Naoki asks his co-workers at the club about his money, but all of them say they didn't see it. Did Naoki dream he had 10 million yen? If He doesn't get the money soon, he will be thrown into the bottom of Tokyo Bay. Naoki can't trust anyone.