Dismayed that nobody in the village will accept that his flat feet are responsible for his non-combatant status Cecil is thrilled to meet Constance, the one woman who seems to believe him and who he hopes will enable him to assert his masculinity once and for all. George meanwhile rashly resigns from his teaching post as a protest against German being removed from the curriculum. In desperation the headmaster finds a replacement - Bert, whose bizarre teaching methods are a hit with everybody, including , to George's annoyance, Winky.