Professional property hunters Kirstie Allsopp and Phil Spencer are on a mission; to secure the best possible property for the most competitive price, helping buyers through the murky world of agencies and viewings, in a bid to find their perfect home. Mark and Anne-Marie are selling their idyllic house, because it's not child-friendly and they have a young son. They intend to buy a house with more space, but for less money. A tall order for Kirstie and Phil!