Tabitha Thomas gave up on a happy family life with Michael her absent, high-flying husband long ago. Instead, she pooled all her energies into their daughter, Rosie, and her career as headteacher at a local primary school. However, trouble is looming all around her. Unbeknown to Tabitha, Rosie is having a crisis of confidence with the most important exams of her life and best friend, Clodagh, a top TV news broadcaster, is being edged out by an ambitious younger model. And Tabitha's eco-warrior mother is protesting outside the school over a development. But a decision Tabitha made a long time ago which changed the entire course of her life resurfaces when a new teacher at the school turns out to be her first love.