When Aidensfield is struck by a terrible thunderstorm, Ventress claims to have seen a UFO whilst on patrol, along with a number of other villagers. Blaketon fails to believe their claims and fears Ventress is suffering a breakdown. As his career hangs in the balance, Ventress, with Maggie and Nick's help, is determind to find out what happened during the thunderstorm - and save his career. Meanwhile, Greengrass wins a holiday cruise. But after a visit to Whitby, he discovers he suffers from sea-sickness, so he decides to sell them to Mr Conway, who is planning to run away with his mistress. And, Eileen's charity collection is stolen, and she discovers a charitable neighbour may be responsible.