Molly's long-term relationship with Max is like champagne - all froth and bubbles, while deep down Molly has a longing for beans on toast and yes - babies. But while she's thrilled to find herself pregnant at the grand old age of 39, Max's instinct is to run home to the wife who doesn't understand him. Molly soon finds herself out of a job, out of a relationship and out of luck. Her only option is to sell up her trendy singleton flat, move out to the suburbs and bring up her baby solo. But, while her old single friends are convinced she's 'gone over to the other side'; her newly acquired married ones are a little wary of her single status. Could it be that just because Molly's car now has a sticker that says 'BABY ON BOARD', her love life isn't entirely over...?