Jericho is the show that reveals the unthinkable. Not just a nuclear blast, but 23 separate bombs that wipe out major U.S cities. The people behind the attacks maintain the biggest conspiracy the United States has ever witnessed, and will only strengthen the U.S. in the end.
The second season continues the plot with the Allied States of America warring the United States of America. Evidence of the conspiracy is desired by the ASA and the undercover FBI agent must transport it to Texas, whom is independent and leaning with the ASA, which would destroy the USA.