Luke and his new friend Reese thought their adventures were over. How wrong they were. Vicky is now a full fledged CIA agent and she gets to pick her team. What better members than those she knows gets the job done? Their new job is to track down a spy who's going after America's food production.
In times of war, soldiers march on their stomach. If the group fails, the war effort falters. That is not acceptable to the higher ups.