The former heavyweight boxing champion George (Michael Jai White) was shooting commercials in Russia. One day, his home was broken into and a large amount of drugs were placed there, so George was imprisoned for drug trafficking. The mastermind behind this frame-up was the local Russian black boxing community. They used the prisoners' fighting matches to set up gambling games, and George's outstanding background made him a target of the prison. All parties hoped that George could fight with the prison boxing champion Boyka (Scott Adkins). George, who refused to become a tool for profit in the black boxing community, was in a difficult situation in prison. In addition to the insults of the prison guards, Boyka and his group did not give up any opportunity to provoke George. When George found that he had no possibility of gaining freedom except to enter the ring, he resolutely decided to duel with Boyka. However, Boyka, who has sharp leg skills, is not a low-level opponent...