Stella, Shannon and Josh help to settle a violent ethnic dispute. Lawson, Michael and Christian are on the trail of a volatile young couple who are desperate to get married, and meanwhile, Josh receives a drunken phone call from teenager Minka, who is the daughter of Tash, and Kerry receives a surprise visitor.

As TR, along with the drug squad, work to catch a well known drug gang, Kerry's efforts to save Blake, a meth cook and reformed drug addict becomes personal when, devastatingly, she finds out that her son James is battling his own addiction. Meanwhile, Josh finds himself fighting for his life when an unknown man breaks into his apartment and tries to kill him.

On Shannon's first day as a Sergeant, her confidence is hurt after a juvenile delinquent steals the TR02 vehicle, however while pursing the criminal, she discovers he is easily avoidable. Tragedy strikes and Stella discovers she's pregnant.

The team finds a special way to honor their mate. Stella gives Lawson a hard time about not wanting to say anything at the funeral.

Kerry is shocked when her son James is arrested for assault on a flight from Vietnam. When the car they are travelling in is run off the road, James sees the men in the other car and runs. Kerry and TR then find themselves in a race against time to save him from two violent drug runners.

Headstrong Kerry is dismissive of her own safety but when the threats are redirected to her son, her anger at the perpetrators can't be contained.