The grandson of a well known Melbourne criminal figure is abducted and TR races to find he and the kidnappers before anyone else does.
Stella, Josh and Michael are called to negotiate when a man threatens to jump of a building because his girlfriend is missing.
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.