Within hours of meeting in juvenile detention, troubled teens Cindy Collier and Shirley Wolf begin to plan a life together and step one in the plan included killing somebody random. Their victim of choice: a trusting old lady with whom they spend hours chatting about her family before stabbing her.
Meanwhile, Lorraine Thorpe sees a father figure in a 41-year-old in her group of alcoholics. He violently beats his girlfriend and eventually kills her, and Lorraine happily participates; when Lorraine's father learns of the murder and becomes suspicious, they kill him too.
And Courtney Dunkin was adopted by her grandparents and after her grandfather passed away, got into the goth movement, which doesn't mesh with her grandmother's caring Christian lifestyle. After Courtney's boyfriend breaks up with her, Courtney plots to kill him and then escape to Mexico with a friend, but the one obstacle to her plan is her grandmother, and so she drugs her with a spiked milkshake and then shoots her to death after kissing her goodnight.