Leonard has been invited to give a talk on ""The Motorist And The Law"" to the Women's Institute. He expects the AA men to attend, but they all claim to have ""prior engagements"". Most of the AA men are doing a bit of ""moonlighting"" to earn extra cash. Harry, for example, is running a fresh fish delivery service and Mr Bannerman is selling his wife's homemade preserves. Harry is delivering a box of live crabs to Joyce's cafe when he almost bumps into Leonard. He hides the box in Leonard's van. The crabs escape into the van and Harry has a job to recover them. He puts the box down next to the van and then watches in horror as a lorry runs over it. He later becomes convinced that Leonard's pet tortoise, Roger, was also in the box.

Leonard gives the men a lecture about moonlighting. Having discovered that most of them have been 'at it', he threatens to 'put them on a charge'. He orders them all to attend his lecture that evening. Harry buys another tortoise and he and Catherine manage to con