World famous rock band Atonement visits Allt-yr-Coch to perform in the home town of their singer, Darren Jones. Unfortunately the criminal underworld hasn't forgotten Darren's part in the downfall of a terrorist. Deborah has a desperate urge to scream at some mountains. There seems no better place to do this than Allt-yr-Coch. Other than this, life goes on as usual in the sleepy Welsh village. Or does it?