A zero tolerance on misbehaviour at St Jerome's School has taken a sinister new turn for the pupils as headmistress Quinn sets up Pupil Reform Initiative for the Socially Offensive Non-Compliant (PRISON). And Quinn has Red's brother Herod in her sights. Meanwhile Moon notices that Quinn only appears to be sending the boys in Moon's year to Prison, after they have been accused of all manner of "crimes" by April and The Pinks. Something is clearly afoot and Moon, reunited with Red, decides to dig for more evidence. A stakeout of April's house by the detecting duo reveals a gruesome truth.