Undisputed III: Redemption is the third installment in franchise started by the 2002 action film Undisputed. The film stars Scott Adkins, Mykel Shannon Jenkins, Mark Ivanir and Hristo Shopov, and was directed by Isaac Florentine. It takes place several years after the events of Undisputed II: Last Man Standing.
Years have passed since Yuri Boyka suffered a humiliating defeat and a broken knee at the hands of George "Iceman" Chambers. Humbled by his injury, he has relegated to becoming the prison janitor. Meanwhile, mob boss Gaga has expanded his prison tournament enterprise into an inter-prison tournament called the Prison Spetz Competition (PSC), which gathers the best prison fighters from around the globe to compete for a chance at a cleared record and early release. As Boyka hears the preliminaries taking place within his prison, as well as failing in his parole, he begins training privately to bring his knee back into fighting shape. Just after current champion Vladimir Sykov defeats his opponent in the final round of the prison's tournament, Boyka challenges him on the spot and swiftly defeats him, thus becoming the Russian representative for the PSC.