It is the middle of a long night shift for PC Sean Denton and his partner PC Gavin Wentworth when they are approached by a dishevelled-looking woman desperate that they follow her. She leads them to the old Chasebridge High School where they find the dead body of a refugee. The investigation which points to the neighbouring greyhound stadium finds Denton caught up in a world of immigration, drugs and sexual abuse, and one in which his private life becomes increasingly entwined.