Excitement about the Thomas brothers' plan reaches fever pitch, but not everyone wants to sign up. Aspiring revolutionaries Aled and Daf decide they need to make a statement of their own, while Prem and Kamini are divided over their future. Owen also worries for the future of his son Dan when Prem says he's to stick to work in the mine. Meanwhile Siân decides that farmer Ceri might be worth ensnaring with her feminine charms - at least if he really has come into some unexpected money! When an act of sabotage breaks the village's calm, Prem finds himself facing his darkest hour.