The NCIS team investigate the death of a Petty Officer but they soon discover that the Officer faked his own death and that he was involved in an illegal drug prescription ring, having originally used the Navy computer system in the office for his own personal and financial gain. The team work alongside a local civilian law enforcement team whose personalities are an exact match of their own but things take a turn when the Petty Officer they've been looking for is actually found dead, having shot in the back of the head at close range and as such, the team seek to find who was responsible for his murder.