Barney Thomson, awkward, diffident, Glasgow barber, lives a life of desperate mediocrity and his uninteresting life is about to go from 0 to 60 in five seconds, as he enters the grotesque and comically absurd world of the serial killer.

A young Scottish singer, Rose-Lynn Harlan, dreams of making it as a country artist in Nashville after being released from prison.

Widower Tom, on the recent passing of his wife Mary, uses his free bus pass to travel the length of Britain from John O'Groats in Scotland to Land's End in Cornwall, their shared birthplace, using only local buses. It's an incident-fuelled nostalgia trip and his encounters with local people make him a media phenomenon. Tom is totally unaware and to his surprise on arrival at Land’s End he’s greeted as a celebrity.