On February 26, 1993, an explosion in an underground garage rocks Tower One of the World Trade Center in New York City, killing six people and injuring more than 1,000 others. ATF Agents immediately respond to the incident.

While searching the debris, ATF Explosives Enforcement Officer Joe Hanlin recovers the vehicle identification number of the rented Ryder van that housed the bomb. This crucial bit of evidence leads to the arrest and conviction of the five primary Islamic fundamentalists who plotted and carried out the attack.