After nearly being rundown by a gang known as the Scars, Brenda (Linda Blair) and friends trash the leader's car. Gang leader, Jake, exacts his revenge by getting his cohorts to gang-rape her mute-deaf sister, Heather (in a gloriously nuanced role by Linnea Quigley). Armed with a crossbow and a bad attitude, Linda Blair sets out to avenge her mute-deaf sister while blazing a bloody, Bronson-inspired trail through 80's Los Angeles.