After trying to rescue a man on the subway tracks, two teens wake up in a room dominated by a mysterious black sphere that sends them to hunt down and kill aliens hiding on Earth.

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...

Young Public Prosecutor Keiichiro Okino (Kazunari Ninomiya) is assigned to the department of Tokyo Public Prosecutors Office which deals with violent cases. He is thrilled to work with Takeshi Mogami (Takuya Kimura) whom he admires. One day, an elderly money lender is killed and Shigeo Matsukura is identified as a suspect. He borrowed money from the victim. In his past, Shigeo Matsukura testified in a female middle school murder case. Takeshi Mogami is aware of the heavy grief carried by the deceased girl's family and he tries his best to prove Shigeo Matsukura's guilt. --asianwiki