A hay barn is set on fire at Low Dale Farm. It seems that an arsonist is targeting isolated barns. Arnold Merryweather's ancient bus helps catch a car thief. And when Nick arrests not only a pig thief but also the expectant pig, the police station cleaner is not very pleased. But it's not all crime. A glider crashes into a romance in a thatched cottage and then Constable Nick is involved in a plot to force a penny-pincher to spend money.