When history teacher Matt Bashir is promoted to Principal of a notoriously violent Boys' school in Sydney's south-west, his radical approach brings him into conflict and leaves his personal life dangerously exposed. But just when he seems to be making progress, a 17-year-old student is found dead on school grounds.

Troubled psychotherapist Peter Bowers is suffering from nightmares and eerie visions. When he uncovers a horrifying secret that all of his patients share, he is put on a course that takes him back to the small hometown he fled years ago. There he confronts his demons and unravels a mystery 20 years in the making.