After rescuing two children, Josh's rage spills onto their father, who may have attempted to kill them. The new inspector challenges Josh's position on the team.
Two 14-year-olds race away from a police check-point, dragging a police officer alongside. After the chase is called off they are found on a rooftop, the plot thickens as a body is found and they become murder suspects.
A convicted criminal is on the run after busting out of a prison transport van. In his desperate quest for freedom the man assaults Grace and takes a civilian woman hostage.
Josh, Grace and Michael investigate an alarm at a high-security laboratory and find that intruders have freed all the research animals from their cages.
After a prominent politician's daughter and her school friend are kidnapped, Kerry and the Tactical Response team must run a covert operation to safely recover the girls.
Lawson is a part of a high speed chase involving a group of carjackers, Kerry is pulled over for drunk driving, and Josh, Grace and Michael are involved in a fatal car accident.
The Tactical Response team is called to a Media Building where a disgruntled man has locked himself in a room and is reciting erroneous articles published by the newspaper.
Lawson and Stella deal with a suicidal ex-footballer, Michael and Josh chase burglars through a series of complex tunnels, and Kerry is kept busy at the hospital where Dom and Grace are recovering.
After a nasty domestic dispute, the TR team are called to look for a man, who has hospitalised his wife after an argument. The team reveals he has a gun, as-well as his son. Lawson has the job of calling him down from a rooftop.
