Three years on, it's time to follow another 24 hours in the life of federal Special Agent Jack Bauer (Kiefer Sutherland) in this wildly innovative television series. Jack and his colleagues are being blackmailed with the threat of the release of a deadly virus, a Type 3 pulmonary immuno virus. Incarcerated drug baron Salazar's brother is demanding his release but Jack must cope with his own heroin addiction too. Time is running out and there seems to be a traitor in CTU...