Timothy West and Prunella Scales travel from Birmingham to Braunston to attend a festival of vintage canal boats, aided on the tricky journey by their son Sam and Juliet, Timothy's daughter from his first marriage. Along the way, they meet a 78-year-old boatman, who reveals how he was born on a canal boat, and unveil a plaque dedicated to a woman who dedicated her life to preserving Britain's canals.
