Jim Osgood, a tough PE teacher who was in the Territorial Army, uses his experience to exact a harsh discipline at Ashfordly School. However this way of teaching ends up with a boy at the school, a troublemaker named Gary, ending up in the hospital. The boy is determined to take revenge, and so breaks into Mr. Osgood's office, taking his gun, forcing Joe into a race against time to stop this turning into something fatal. Elsewhere Oscar is organising a trip to London for the villagers. But his detailed plan for the trip creates rifts in the party.L (thetvdb.com)