When a United States citizen of North Korean descent is murdered, the secrets to classified software are thought to be lost until NCIS uncovers a suspect from Director Vance's past.

The team rushes to a crime scene after receiving an "agent needs assistance" page and learns that one of their own is in peril.

After a sailor is killed during an underground street race, the NCIS team determines that his car had been sabotaged and contained confidential Navy equipment. Meanwhile, Callen is forced to take traffic school.