A disabled woman is beaten and raped and her condition leaves her unable to speak. Benson and Stabler are able to conclude that someone close to her is responsible and that leads them to her sister and nephew.
As the courtyard is being transformed with holiday decorations, the NCIS team races to solve the murder of a marine by an exploding cell phone. They, then rush to find the remaining men of his former unit before another explosion kills someone else.
The death of a lieutenant commander appears to be suicide but the NCIS team uncovers evidence corresponding to murder. Also, Operational Psychologist Nate Getz joins Special Agent Kensi Blye in the field.
After a sailor is killed during an underground street race, the team determines that his car had been sabotaged and contained confidential navy equipment. Meanwhile, Callen is forced to take traffic school.
When a young boy is executed, Intelligence turns to the boy's parents for information. Upon further investigation, they discover the boy's father has a criminal background and was part of a local gang.