Tommy, an old army buddy of Frank's, asks him to go to Libya with him where their mutual comrade, Rob has gotten in hot water while working for MI-6. They believe Rob has been killed but soon are pulled into a battle of two factions for a deadly bio-weapon and discover lots of secrets of their friend.

Frank and Cat travel to the Sahara Desert to deliver a briefcase but get caught up in a mine collapse and spring into action to rescue the miners.