Series six rejoins the intertwining lives of Adam, Jenny, Pete, Karen, and David. As they battle against life's everyday challenges, something greater looms - midlife. At 45 and up, the last time any of them dreamt about the future feels like decades past. How happy are they with where they are now? Is there hope for someone who is just over the hill, unmarried, and a single parent? They're nearly 50, so why don't any of them feel like grown-ups yet?