The year, 1978, in a Catholic school, pupils in detention. Billy is missing from the roll-call. Detention has barely begun, as Billy drops in with some friends. All are armed to the teeth. Billy takes revenge on his classmates for the constant harassment. Morgan, another pupil, still has a reckoning with the senior pastors in connection with sexual abuse.

The once unconditional friendship between police officers Vincke and Verstuyft hits a very rough patch when they come up against a series of gruesome murders. Complicating matters even further, a survivor of the killer drives a wedge between them when Verstuyft falls for her charms. Meanwhile, the serial killer has a new victim in sight...