Eve lives in the beautiful Cumbrian town of Tarnside with her husband Neil. After years of trying, and failing, to become parents, they are in the final stages of adopting four-year-old Milly. Though she already feels like their daughter, they just have to get through the 'settling in' period: three months of living as a family before they can make it official.
But then Eve's mother, Joan, comes to stay.
Joan has never liked her son-in-law. He isn't right for Eve; too controlling, too opinionated. She knows Eve has always wanted a family, but is Neil the best man to build one with?
Then Joan uncovers something that could smash Eve's family to pieces...