Three former school friends, reunited at a school reunion, decide to embark on a camping trip into the woods.

The story of Austrian, Johann "Jack" Unterweger, who wrote a book about his criminal past while serving a life term in prison for assault. In 1974, Unterweger murdered 18-year-old German citizen Margaret Schäfer by strangling her with her own bra, and in 1976 was arrested and sentenced to life in prison.