TV adaptation of the play set in a Cambridge School of English for Foreigners in 1962. St John Quartermaine is a rather ineffective but kindly teacher at the school who, becuase of his gentle character, has hardly any enemies - in fact, the rest of the staff confide in him or generally pplay on his good nature. Then Derek Meadle arrives on the scene. He is a new part-time teacher who really wants to be full-time, but people like Quartermaine are in the way.