The unethical lawyer Michael Grey is defending a criminal in court and if he succeeds, he will become partner of the office where he works. He secretly hires a criminal to frighten an important witness from the prosecutor to win the case. The trial is suspended to the next day and Michael drives to the South River State Penitentiary to visit another client. Michael is received by the Warden and guard Ray Clement that blames him for releasing criminals from prison. While alone with his client, the inmate takes Michael's pen and stabs himself in his own neck. Ray accuses Michael of murdering the inmate and the lawyer is sentenced to the prison. He is locked in cell 213 and has an abusive treatment from the Warden and Ray. Michael has visions in the cell and soon he discovers that the criminal he hired has killed the witness and his family. Further, his deceased client is haunting him. Meanwhile the government agent Audrey Davis comes to South River State Penitentiary to investigate the ...