1955. The polished veneer of a boys boarding school in Northern England masks a cadre of wickedness. Seniors viciously torment any junior they deem unfit. Jonathan Simon, in his first term is warned that there are three monsters in his dorm; seniors Flicker, Sleeth and Tunk, and that the code of conduct mandates no snitching. Simon befriends two other juniors; pixie-faced Ian Gracey and witty, grossly overweight Arthur Crown. During a cross-country run, the three friends take a short cut and stumble into the cadet rifle range. Corps Sergeant Sleeth puts them through a degrading punishment using human excrement. The three juniors swear a blood oath never to allow another bully to abuse them. Will this oath be their downfall, or will they make it through the school year? Snitching could have serious consequences, but keeping silent will break their blood oath. As Simon, Gracey and Crown try to survive this perilous journey, the constant threat of harm brings their friendship ever closer...