Sally McGinley, 29, is a playwright who has watched her university friends achieve success in film and theatre while her career is diminishing. Greg Burns, 44, is an actor on the slide - television success in a vet drama six years ago is a distant memory, and his twelve-year relationship with Caroline and his ten-year-old daughter has hit hard and frustrating times. When Sally is commissioned to write a new play for top director Freddie Zamora in the West End and Greg is cast as the male lead, both of them seize the opportunity to enliven their professional lives. Greg moves to London and they begin an affair which at first seems just the kind of reckless, sexual adventure they'd craved; until, disbelievingly, Sally announces she is pregnant and they are both forced to make decisions that catapult them into a recognition of just what real life entails.