Marie Dunwoody has a lovely husband, three wonderful children, and a business of her own. But she cannot bake for toffee. Marie can't ignore the disappointed looks any more, or continue to be shamed by neighbour, Lucy Gray. She vows to follow – to the letter – recipes from the Queen of Baking and at all times ask "What would Mary Berry do?" Husband Robert has noticed that his boss takes crumb structure as seriously as budget sheets and so puts on the pinny: serious redundancies are on the horizon. Marie starts to realise that the wise words of Mary Berry can help her with more than just a Victoria Sponge. But can Robert save the wobbling soufflé that is his career?