As more and more villagers sign up for New Trefelin, Prem is left isolated. An act of sabotage breaks the village's calm, and Basil Thomas wastes no time in telling Emlyn who he thinks is to blame. Sian decides that farmer Ceri might be worth ensnaring with her feminine charms - at least if he really has come into some unexpected money - and Robert is doing his best to win Megan back, much to Emlyn's alarm. Emlyn signs up for a new house in the development, but Megan is far from pleased. And they're not the only couple to fall out when Prem confronts Kamini over a job from Basil. But Prem's anger is cut short when he discovers that, against his advice, Owen has gone back to work underground - with disastrous results.