In Paraguay, Mac & Webb continue their mission to thwart the drug lords & terrorists.

Harm continues to deal with his emotions where Mac is concerned. Worried about her, Harm turns to CIA Attorney Catherine Gale for help in determining Mac's location. However, Harm ends up helping Ms. Gale with a personal issue.

In the final episode of the series 8th year turns out to leave fans of the show with facing yet another long summer of anticipation & speculation. When word reaches Washington, DC that Webb & Mac are missing, Harm insists on leaving for S. America to search for them, even if it means resigning his commission.

Sadik Fahd who held Mac & Webb captive in Paraguay at the end of last season, shows up in Washington, DC and Mac has to wonder what he's up to when he begins to contact her.

Harm temporarily loses his hearing when the car battery on his Corvette explodes while he was working on it.