Any parent knows the challenges that a new baby brings, from the culture shock of nappy changes and sleepless nights to the realisation that time is no longer your own. Now imagine that multiplied by four. This one-off documentary follows the ups and downs of family life for people with quadruplets, meeting families with children of different ages - from babies to 10-year-olds - to reveal the joys, the occasional heartaches and the sacrifices that are necessary when a family expands by four overnight.