Adrian Edmondson explores the Dales from below as he joins caving expert Dave Gallivan underground near Horton-in-Ribblesdale. Ethical entrepreneur Izzy Lane takes on a new venture - she plans to rescue battery hens and hopes to use their eggs in a new food brand. How will she and her farming friend Ernest Ayre get on as the new feathery flock arrive in Richmond? During a break from trying to sell a Dales waterfall, estate agent Brian Carlisle tackles another watery challenge - training for an open water swim at Semerwater.