Boyka is back. This time he is fighting in the firt ever inter-prison tournament with one knee.
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 begin - an international affair, matching the best fighter from prison 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

prisoners warrior , Yuri • Boyi Ka (Scott Adkins, ornaments) the previous focus on the knee was seriously injured , lost its fighting ability , only to clean up in prison , the past glory of battle had passed away , and the prison authorities denied his parole , never willingly deprived of their liberty Boyi card , the hope lies in the international prisoner fighting contest , because competition ultimate champion will be free . Harsh recovery training , Boyi Ka overcome and replaced Gaka ( Mark Ivanir ornaments , ) men contestants , they once again co - operation , to Georgia Gegong prison , Boyi Ka , where the parts of the world the other seven prisoners fighters compete only prisoners king of Fighters . Contestants in the United States Winterbottom ( Michael Shannon Jenkins, ornaments ) , and Columbia 's " killer " with strength, Boyi Ka for freedom must beat them , but he soon discovered that the real enemy is not fighting in the field of opponents ...