It's Merton and Jenny's big day, although the event doesn't go according to plan when a former CID colleague of Merton's asks the team to track down an ageing bank robber known as "Ronnie the dog man". Things begin to go wrong when Jenny's disgraced brother Steve returns, claiming to be a changed man and desperate to make amends. Meanwhile, Vernon promises Jenny that he will catch a fresh wild salmon for the wedding, only for Bernie to be more successful than him, whilst Bellamy turns to Blaketon when Gina becomes paranoid that he only wants to marry her because she is pregnant.

Merton and Jenny's honeymoon is cut short when Jenny's health takes a turn for the worse, and Merton receives another blow when he returns to Ashfordly station to find Ventress has let standards slip in his absence, which has incurred the wraith of a constabulary inspector whose car has been stolen. With the reputation of the station at stake and a flash car to find, the team have a lot on their plate when a crooked travel agent cashes in on local holiday-makers absence. Meanwhile, Vernon's fortune comes crashing down when he makes a disastrous investment whilst organising a Bentley rally at Ashfordly Hall, whilst Gina isn't happy at the thought of giving up the Aidensfield Arms to marry a policeman.