Zane Malik is working with National Security's Richard Skerritt to track down the car bomb killers. The prime suspect is a Lebanese businessman, Akmal. He's suspected of being an arms dealer, but the only way to get the truth is to get inside. Malik agrees to go undercover, leaving a gap in the Major Crime investigative unit.

Detective Zane Malik is deep undercover and in danger. Can he link an arms dealer, Akmal, with the car bomb murder of an NSO agent? Agent Skerritt is positive there's a connection. When Akmal's girlfriend is killed, he orders a hit on the man who killed her... and he wants Malik to do it.

An ambulance officer is stabbed to death by a kid in an drug-induced rage. Detective Sonny Koa delivers the news and bonds with the victim's family. The mother of the deceased extracts a promise from Koa: she wants her son back, in one piece, for burial. Meanwhile, the mystery surrounding the dead NSO agent deepens.