Nick and Alf go on a fishing trip to Whitby. Alf is looking forward to a weeks holiday but Nick is there undercover to investigate smuggling. Nick finds out that a container dumped at sea contains counterfeit money. Alf teaches Nick about fishing and they organise a game of poker with some of the suspected smugglers. Nick takes this opportunity to force his opponent to hand over some of the counterfeit money. They are lodging with the Stirling's who own a sailing shop. Jake Stirling helps Nick and Alf set a trap for the smugglers and they are caught. Jake's girlfriend finds out she's pregnant and he wants her to have an abortion. Kate tells her its illegal. Blaketon is taking over Nick's patch while he's away which gives him a great opportunity to keep an eye on Greengrass. However he fails to find out that he's doing a very good trade in venison!