Callen is left worried that Sam might be too emotionally involved in a case as Sam tackles a missing persons case to find the nephew of an Afghan elder who assisted Sam when he was wounded on a mission in Afghanistan but what should be a normal case soon turns deadly when the boat shed itself becomes an unlikely as the supposedly missing nephew and a terrorist on the NCIS Wanted List who wants Sam dead arrive to kill Sam with Callen, Kensi and Deeks being led into an intense gunfight with Sam's life on the line.