Ben Elton writes and directs this romantic comedy adaptation of his own novel. Sam Bell (Hugh Laurie) and wife Lucy (Joely Richardson) seem to have it all - good looks, nice jobs, the perfect marriage - but despite their best efforts they haven't yet managed to produce the one thing they want above all else: a baby. When BBC commissioning editor Sam comes under pressure from his new boss, he begins writing a screenplay based on his and Lucy's experiences with IVF, using extracts from his wife's diary with neither her knowledge or approval. Meanwhile, theatrical agent Lucy has become enamoured of her latest client, good-looking actor Carl Phipps (James Purefoy). Can Lucy and Sam's marriage survive the strains they are placing it under?