The team must work together to find Tony when he disappears during an undercover operation.

Tony goes undercover as an escaped prisoner chained to a convict who holds the key to the recovery of stolen ancient Iraqi art and sculpture worth millions of dollars. But when the GPS locator Abby planted on Tony becomes inoperable, Gibbs and the team must work quickly to find him by using other methods since Tony is unaware that the thief may be a dangerous killer.