During a routine cell extraction, Dom and Stella are caught up in a prison siege when inmates take several guards hostage. Shannon negotiates with the ringleader, but ends up admitting that Dom and Stella are inside. When the situation escalates as a result of the inmates knowing that police are inside, Lawson sends in Josh and the riot police.
Kerry has to deal with an accident in which she hit a cyclist, and is horrified when the man dies.
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.