Deep in the Welsh Valleys three families give up their 21st century creature comforts and time-travel back to face the hardships of life in a 1927 mining community. It's not just the coal-mining men who are finding things hard. Their wives start to feel the pinch of life in 1927, with mouths to feed and a cleaning routine to stick to. There's some light relief, however, as the Cartwrights, Phillips and Griffiths families enjoy a rare night out and celebrate a special birthday.