After selling his business, rich middle-aged merchant Dickson McCunn decides to set out on a walking holiday in the Scottish Borders. There he meets a young English poet, and both soon become embroiled in the plot of an international gang to capture a Russian princess. With the help of the Gorbals Die-hards, an indomitable gang of urchins from Glasgow, they frustrate and finally defeat the gang. And in the process Dickson happens to discover a new meaning to life . . .