When a family court judge is taken hostage by a disgruntled father, with a vendetta against the judge, TR tries desperately for a peaceful resolution. As the situation escalates, Shannon is in a race to negotiate with him before Josh is forced to shoot.
After a little girl is found abandoned and wandering along train tracks, TR find out her father has just cuddled someone. Lawson's attempts to find the man are hampered by journalist Jacinta Burns.
Rush follows the lives of members of the prestigious Tactical Response team (TR), which is based on the real life Victoria Police Critical Incident Response Team, a highly mobile unit that fills the operational gap between general duties police and the SWAT-like Special Operations Group. The team is seen responding to unhappy incidents such as carjackings, sleepings and armed offences. Rush focuses on the TR officers, their intelligence officers, Leon, Audrey and Inspector Kerry Vincent, head of the TR administration. It explores both the working and personal lives of the team.