The big day has arrived for Sergeant Merton and Jenny. The day of their wedding. But as it is almost a tradition for police weddings in Aidensfield something puts a spoke in their wheel. A masked robber has assaulted an armoured car and gotten away with thousands of pounds in old, used notes. The modus operandi suggests that the robber is Ronnie "The Dogman" Brown and Merton's old friend DS Kenny Parker is in charge of the investigation. Not surprisingly Brown has made himself scarce when the police come to pick him up. Meanwhile everybody else is occupied with the preparations for the wedding. Vernon Scripps promises to get a freshly caught wild salmon. He counts on catching it himself and to an (instant) expert on fly fishing that should not be any problem, should it? Despite her pregnancy Gina still has second thoughts about marrying Phil Bellamy.

The day of the wedding between Dr. Liz Merrick and Ben Norton is growing near, but the happy event is overshadowed by Jenny's mental illness and Sergeant Merton seriously considers getting a transfer to be near her and able to support her. PC Walker finds an abandoned car on the moor. It is registered to Angela Price, who has been kidnapped and the kidnappers have told her husband not to involve the police. But Sergeant Merton knows Price and finds out anyway and he suspects that the kidnappers hide out in a farm they have rented from Lord Ashfordly. Ben Norton nearly misses his wedding when he is asked to assist the police because he knows the premises.