Now, Scarlett is back in her childhood home with her plan in tatters and a baby on the way, while John Smith - actuary, proper grown-up and Scarlett's boyfriend - has left her to join an archaeological dig in a tiny village somewhere in Brazil.
But that's not the worst bit.

The worst bit is she can't be sure who the father of the baby is . . . even though she's slept with exactly four-and-a-half men in her entire 35 years.

As a distraction, Scarlett throws herself into her job as a wedding planner, but even that's not going smoothly. Because of her growing feelings for her most important client's husband-to-be . . .

In the end it's the person she thought she knew best - herself - who surprises her the most. Join Scarlett as she tries, for the first time ever, to navigate life without a plan.