Kaiji is about to have his life changed. The thrill is beyond anything he, or most people, have experienced. The adventure is not without risk and danger however. He is given four games, which are challenges, and include life and death situations.

An elite salaryman drunkenly tries to die by suicide, but is saved by a mysterious stranger who holds him captive and sexually torments him.

From a first feature director Koichiro Oyama who worked as an assistant director for Hideo Nakata's "Kaidan" (2007), the film is about a man with crime records living with his own son without knowing their real relationship. Starring Ikkei Watanabe "Suspect X", the film won Yubari International Fantastic Film Festival's Audience Award, whose last year's winner was a smash hit zombie film "One Cut of the Dead".

Mashiba Riku , who has a past of betraying his friends and going on the run, he comes to Black Crow leader Kanzaki Kuroto and his right-hand man Masato Yuya. Riku says he is setting up a problem resolution agency called White Knight.

Lawyer Shindo Kai is an undefeated ace, also working as a hitman who punishes criminals exploiting legal loopholes. While secretly serving justice, he hides his true identity as the illegitimate son of Gondo Heihachiro, a yakuza boss. When Gondo's group is attacked by the rising Mayhem gang, Kai, having recently lost a case due to sabotaged evidence, investigates the betrayal. His pursuit of the truth leads to a bloody reckoning.

Detective Nobuhiko Kamamoto is a detective with the Tokyo Metropolitan Police Department, armed with keen interviewing skills and the ability to read people's personalities. But his personal life is in shambles and he must find a way to juggle problems at home while also handling multiple complicated investigations.