Neil and Nat seem to be perfectly matched. They hate Marmite and the opera. They love reality TV and the missionary position. And they both absolutely do not want children. At least that's what Nat thought. But now Neil seems to have softened towards the prospect of dirty nappies and sleepless nights, and he's practically begging her for a baby. Nat tries to ignore his change of heart and won't explain her reasons for hating the idea; she can't. Are they that compatible after all? As the cracks start to show, Nat wonders if Neil really is the man of her dreams. Or is it possible that someone from her past could actually be 'the one'? Nat's little black book, filled with the names and addresses of previous lovers, could hold the answers she's looking for. Or it could be a one-way ticket to all kinds of trouble.