The story of what happens when five high schoolers walk into detention and only four make it out alive. Everyone is a suspect, and everyone has something to hide.

When thirty-year-old Miki Anderson returns to her home town in rural Tasmania after fifteen years in prison, she wants nothing more than to put her life back together. To figure out who she is on the outside. But her presence dredges up long-held secrets from the past and Miki realizes everything she thought she knew was wrong. And it is far from over.