The NCIS team uncovers a sinister plot by a private detention center contracted by the government to house undocumented immigrants. Also, Lasalle and Sebastian travel to Alabama to search for Lasalle's missing brother.

Lasalle hopes to avenge his brother's murder by tracking a drug ring in Alabama he believes is responsible. Also, when Pride assists with the case, he crosses paths with Eddie Barrett, an elusive individual who knows more than he is sharing.