Nan Ryan lives by herself at Number 14 Chestnut Road. When it's heard that the builders are coming to work on the deserted house next door, everyone has an opinion. Nan's three grown-up children reckon she won't get a moment of peace. But when Derek Doyle's shiny van arrives outside Number 12, Nan is secretly excited. And when the handsome builder looks to Nan to help unravel the mystery of the previous residents vanishing, a special friendship begins to flourish. But as they soon discover, nothing is quite what it first seems. With family complications and crooked property developers waiting in the wings, things are about to get very messy.