In the Arizona desert there is a facility known as CATCH, from where all air traffic in North America is controlled. Scott and Virgil handle a rescue mission involving a mid-air plane collision while Kayo infiltrates the bunker with the help of Thunderbird Shadow. Then Kayo realises that this is all part of a much bigger plan by the Hood.

A number of carefully staged disasters require the full attention of everyone at International Rescue. Kayo discovers that the Hood is behind these acts of terrorism and has actually infiltrated Tracy Island. To make matters worse, the Hood has rigged up explosive devices to bring down the Thunderbird craft - and now he reveals his shocking secret to the Tracy brothers.