Exploring Britain's wealth divide and whether or not money truly can buy happiness, families from opposite ends of the economic spectrum trade lives for seven days. In order to see what life is like on the other side, a family that ranks in the top ten per cent of Britain's wealthiest households trades homes, lifestyles and budgets with a family from the bottom ten per cent. As the experiment progresses the families follow each other's typical spending habits and extra-curricular activities to learn if the grass really is greener.