MMA legend Patton James, now a commercial fisherman, is pulled back into the cage when his brother is in danger. Reuniting with his old coach Sammy, he commits to one final fight in one championship against the brutal champion Xavier Grau.
In Los Angeles, an ex-con takes the underground fighting world by storm in his quest to fulfill a promise to a dead friend.
Four fighters from different backgrounds come together to train under an ex MMA rising star and then ultimately have to fight each other and the traitor in their midst.
The eldest son of a ruthlessly tough MMA champion must fight his way out of the abusive cycle his father has continued.
A man must survive a prison where hardened criminals battle to the death for the warden's entertainment.
Picking up after the events of Never Back Down 2, former MMA champion Case Walker is on the comeback trail to become champion once again.
A former youth boxing champion, Jimmy McCabe is a man in search of hope but looking in all the wrong places. When he hits rock bottom he turns to his childhood boxing club and the only family he has left: gym owner Bill corner man Eddie and promoter Joe. Back in training, years after anyone thought he was a contender, he risks his life, as he tries to stand tall and regain his place in the world.
After a blood- soaked jujitsu match in Dubai, fighting legend Mickey Kelley falls to superstar Blaine. But years later, an online video proves that Blaine cheated, and the world demands a rematch. Can the aging underdog get back into shape in time to vanquish his foe, get revenge, and claim his prize?
Monroe Hutchens is the heavyweight champion of Sweetwater, a maximum security prison. He was convicted to a life sentence due to a passionate crime. Iceman Chambers is the heavyweight champion, who lost his title due to a rape conviction to ten years in Sweetwater. When these two giants collide in the same prison, they fight against each other disputing who is the real champion.
An ex-con battles it out in the cage to pay for the operation that would save the daughter of his victim. Along the way he finds fatherly love, and friendship, in the most unlikely of places.
Forced into a deadly cat-and-mouse game, a disgraced mixed martial arts fighter is hunted through the jungles of Southeast Asia.
Canadian policeman Louis Burke is assigned in a jail to investigate the murders of prisoners and jailors. While there, Louis, using his outstanding martial arts skills, is able to save his life and make himself respected in this violent world.
In the late 1990s, up-and-coming mixed martial artist Mark Kerr aspires to become the greatest fighter in the world. However, he must also battle his opioid dependence and a volatile relationship with his girlfriend Dawn.
Heavyweight Champ George "Iceman" Chambers is sent to a Russian jail on trumped-up drug charges. In order to win his freedom he must fight against the jailhouse fighting champ Uri Boyka in a battle to the death. This time he is not fighting for a title, he is fighting for his life!
An aging ex-boxer gangster working as muscle for a Boston crime boss receives an upsetting diagnosis. Despite a faltering memory, he attempts to rectify the sins of his past and reconnect with his estranged children. He is determined to leave a positive legacy for his grandson, but the criminal underworld isn’t done with him and won’t loosen their grip willingly.
A drifting ex-soldier turns underground fighter with the help of a just-released ex-con, pitting him against corrupt cops and hired killers now gunning for him and all those he cares about.
When a battered boxer past his prime finds his dreams and his relationships on the ropes, he falls back in with a dangerous crowd and has to take the biggest swing of his life to reclaim his hope and his family.
Russian inmate Boyka, now severely hobbled by the knee injury suffered at the end of Undisputed 2. No longer the feared prison fighter he was, he has declined so far that he is now good only for cleaning toilets. But when a new prison fight tournament begins - an international affair, matching the best fighters from prisons around the globe, enticing them with the promise of freedom for the winner - Boyka must reclaim his dignity and fight for his position in the tournament.
When a young soldier, newly returned from war, gets caught up in a drug bust, he is recruited by the authorities to go undercover in a notoriously dangerous prison in order to figure out what is really going on.
The youngest son of an alcoholic former boxer returns home, where he's trained by his father for competition in a mixed martial arts tournament – a path that puts the fighter on a collision course with his estranged, older brother.
