Thrown in prison for the murder of his girlfriend, Trevor begins to relive his past and lash out against those who wish him harm. After a violent battle with inmates and one prison guard, he is taking out of prison to work with the FBI. The FBI needs him to infiltrate a dangerous underground fight rink, to investigate its connection to several abductions. As a skilled fighter, Trevor infiltrates the underground fighting rink and impresses one of the promoters. He is then giving a job as the promoter's personal bodyguard, where he begins to discover the corruption and murder his new employer is involved in. Assigned with a mission to help murder an innocent boy, Trevor is pressed to find enough information to stop the murders. What Trevor really finds is who is responsible his girlfriend's death, allowing him cold and brutal revenge.