Preachers' daughters aren't supposed to be atheists. They're also not supposed to make pacts to lose their virginity by the end of the year, but high school senior Meredith Beaumont is sick of letting other people tell her who to be.

Spending the last four years as Mute Mare, the girl so shy just thinking about boys could trigger panic attacks, Meredith knows exactly what it's like to be invisible. But when a vindictive mean girl gets her manicured claws on the anti-virginity pact and spreads it around the school—with Mare's signature at the bottom—Mare's not so invisible anymore. She just wishes she was.

Now the girls mutter "slut" as they pass her in the hall, and the boys are lined up to help complete her checklist. When she meets a guy who knows nothing of the pact, their budding romance quickly transforms from a way to get her first time over with to a genuine connection. But when the pact threatens to destroy her new relationship and the fragile foundation of her seemingly perfect family, Mare has to decide what's more important: fixing her reputation and pleasing her parents, or standing up for the person she wants to be.