at 8 a.m., the us intelligence department received news that a nuclear bomb would explode in the united states today. bbb。 to stop this terrorist attack, CTU recalled again because of losing his wife CTU jack ball (keif sutherland) KieferSutherland ). as the investigation continues to deepen, the outline of the conspiracy becomes clearer. it turned out that in order to provoke a war, the terrorist organization forged a recording file and wanted to use the united states to launch a war with the three countries mentioned in the recording file. although the president is very convinced of jack's investigation, the president is unable to stop this imminent war with only speculation but no substantial evidence. as the president insists on delaying stopping the attack, the cabinet and vice president temporarily deprive the president of his power by passing the constitution. now jack has no presidential support and can only fight alone. as time passes by little by little, can jack find out the truth in the only time?