A group of popular teenagers trick three unsuspecting classmates into the woods to see what it's like to kill someone.

Four years after the original massacre, a professor researches the teenage killers' personal lives for her dissertation on youth crimes. She soon discovers the teens friends and family members she interviews are being murdered days later, and she's next on the new killers' blood-soaked list.

Seven years after the slaughter of a group of misfits, the sole surviving killer teen finds her own life, and those of her family, now in peri