At a country house that was once a historic Cumbrian pub, Reuben, Sonny and Jess are installing underground pipework. However, as the trenches deepen and the pressure mounts, the cracks literally begin to show, and the team must think fast to keep the project on track. Also, Reuben's dad Clive, and brothers Miles and Sid set sail across the Irish sea on a rare father-and-sons' adventure