A jujitsu master becomes corrupted by the glitz and glamour of Hollywood. When a respected jujitsu master eschews a lucrative prizefighting career in favor of opening a self-defense dojo, it appears that he has chosen a peaceful path in life. The dedicated master's fate takes an unanticipated turn, however, when he is manipulated into participating in ultimate fighting championships by a group of unscrupulous actors and fight promoters. Later, as the master is being relentlessly beaten in a dirty street fight, he connects with a high-profile action star with serious marital problems. Realizing that the only way to regain his honor is to step into the ring, he reluctantly prepares for the fight of his life.

MPAA rating: R; for strong language.

Special features: Behind-the-scenes of Redbelt; "Making-of" featurette with cast and crew; "Inside mixed martial arts:" the cast and crew discuss martial arts; UFC fighter profiles: includes stats, information and a clip from the film; "The magic of Cyril Takayama:" a piece on the magician Cyril Takayama, who appears in the film; an Interview with Dana White; discussion with the head of the UFC about martial arts and the business behind it; Q&A with David Mamet filmed at the Lincoln Center; commentary with David Mamet and Randy Couture.

Director of photography, Robert Elswit ; editor, Barbara Tulliver ; music, Stephen Endelman ; costume designer Debra McGuire ; production designer, David Wasco.

Chiwetel Ejiofor, Tim Allen, Alice Braga, Randy Couture, Ricky Jay, Joe Mantegna, Emily Mortimer, David Paymer, Rebecca Pidgeon, Rodrigo Santoro.

DVD, region 1, (2.40:1 presentation); Dolby Digital.

Optional dubbed French dialogue or French subtitles; closed-captioned.