In the Dales, John Dawson of Bleak Bank farm leaves his son William in charge on a trip away. William gets baling during a break in the weather. In the Lake District, GP Stuart Allen attempts a fifty-mile ultra-run that stretches the entire length of The Lakes. And back in the Dales, geologist John Helm is on a mission to ensure members of the public can safely descend into Gaping Gill, one of the biggest and most spectacular underground caves in Britain.