‘I will always love you, Sweet Pea’. A mother’s promise to her little girl that when the new baby arrives, life will not change, only get better. The mother – Sarah – pours her heart into seven letters, one for every word. Five months into her pregnancy Sarah collapses and the beautiful life she dreamt of turns into a nightmare. With Sarah’s future, and the future of her pregnancy, in their hands, her husband and sister fiercely disagree about what the doctors should do. And the crisis reveals devastating fault-lines in the lives of the entire family.