After terrorizing a convenience store salesgirl with tomatoes, three lowlifes on a crime spree hide out at an isolated farmhouse occupied only by teenage Lisa (Leslie Lee) and her pathetically paralyzed grandpa. bad move, guys, for while Lisa looks innocent enough, she's actually a ticking-time-bomb of psychotic aggression who spends her days killing chickens, feeding raw eggs to her granddad, staring blankly into space and hallucinating blood on a mirror. So when three numb skulls add Lisa to their list of people to abuse, she promptly puts an end to their antisocial activities with the help of her two best friends, a straight-edge razor and her handy axe.