NCIS investigates a ring of clever teenage partygoers when a string of break-ins takes place at Marine Base Quantico. While working the case, Special Agent McGee forms a bond with one of the teens, Teagan Fields.
Having rescued Mac in Paraguay, Harm tries helping her complete her CIA mission started with a now-injured Webb to capture the elusive terrorist Sadik Fahd. Harm and Mac re-examine their confused feelings for one another.