This is the condensed theatrical adaptation of the original TV series' first season.

In a future governed through the lens of a camera, where people eat synthetic food and pursue an online existence in lieu of physical contact, a group of children begin meeting up in the real world. The aloof Ayumi Kono, the genius hacker Mio Tsuzuki, and the socially awkward Hazuki Makino set out to find the fourth member of their group, Yuko Yabe, who has gone missing. With the help of Myao Rei, an unregistered citizen proficient in martial arts, they are able to find Yuko. However, when their situation takes a sudden turn for the worse, the group stumbles headlong into a dark mystery that challenges everything they know about their world.

Kaiji Itou is a good-for-nothing loiterer who spends his days drinking beer and stealing hubcaps—that is, until he ends up being tricked by his former co-worker. Unable to suddenly repay his friend's huge debt all by himself, Kaiji is offered a shady deal to participate in an illegal underground gamble on a cruise ship. This turns out to be nothing more than the beginning of his new life of hell—thrown headlong into a life-threatening roller coaster of mind games, cheating, and deceit. Based on the first entry of the famous gambling manga series by Nobuyuki Fukumoto, Gyakkyou Burai Kaiji: Ultimate Survivor follows our unlucky protagonist as he is forced to fight not only other people, but also the mysteries of their psyches. Kaiji finds out the hard way that the worst sides of human nature surface when people's backs are against the wall, and that the most fearsome dangers of all are greed, paranoia, and the human survival instinct itself.

Now there's a mysterious Mask before James Blood, and the man behind it is one that shouldn't exist. What is the mystery surrounding this mask...? So begins an action-packed crime story set in a beautiful city!