In Sunshine, a quiet suburban of Melbourne, two sets of vicious murders have left the town reeling. While the police quickly connect the crimes, they are desperate for witnesses. The local community enfolds itself in a shroud of secrecy, borne from fear and an untrammeled mistrust of authority. Young constable Graham McGahan, who is suffering from increasingly severe tinnitus, requests to be relocated outside the hustle and bustle of downtown. McGrath is moved to Sunshine and crosses paths with the various people affected by the tragedies and uncovers an unraveling nightmare of guilt and suspicion.