It's the Portwenn Players dance, an auspicious event in the village's social calendar, and Bert is in charge of selling tickets. Louisa buys two tickets and invites Martin. But Martin doesn't do dancing, and most certainly doesn't do social occasions. Even Bert with his sharp sales tactics can't persuade him. Louisa offers her spare ticket to Mark. He thinks it must be his lucky day, especially when Bert suggests that Louisa fancies him. On a school wildlife trip, Louisa has to deal with troublesome ten year old Peter Cronk. He's a clever boy, but he's a rebel, and hates every minute of his school days. He's determined to wreck the trip to Mrs Potter's house where the children are learning about bird life. Sure enough when Mrs Potter steps into her garden she finds her prized bird tables have been smashed, and Peter is the prime suspect. Peter is called to the school head's office to be reprimanded. Mark says there has been a spate of criminal damage in village gardens. He suggests to Peter that he could help to make some new bird tables. But the belligerent boy says he'd rather be arrested. Peter's mother despairs of her son. At the surgery Mark has an appointment with Martin to discuss an embarrassing dilemma. He fears his lack of success with the opposite sex is something to do with size, and wants to hear the doctor's opinion of what is normal! After all he has a date with Louisa, and money is no object if he can make things 'normal'. Martin is flabbergasted by Mark's confession and may be just a bit jealous? Martin has to make a home visit to Stewart James, the park ranger on Bodmin Moor. Elaine tries to warn him about Stewart before he sets off, but Martin isn't listening. He's in for a shock.