In order to avenge the murder of his wife, Kyle (Jean-Claude Van Damme) killed the murderer who bribed the judge and was acquitted in court. Afterwards, Kyle was sentenced to life imprisonment and detained in Russia's "Korava Prison". This is an extremely corrupt prison. The warden not only tried to extort money from the prisoners, but also organized criminals to fight for fun and gambling. Kyle was repeatedly imprisoned for resisting the warden's evil deeds. Faced with the cruel reality, in order to survive, Kyle finally participated in this game, became the fighting king in the prison, and became a tool for the prison rulers to seek benefits. The death of cellmate Billy (Chris Moir) made Kyle, who had lost himself, wake up. With the help of his roommate "Savage", they started a revenge plan...