Mallory Pech believes she's cursed. Injuries, accidents, and misunderstandings follow her wherever she goes. Even her name (first and last!) means bad luck. Her best friend, Benji Chance, insists Mallory's fortune is hers to control. Heeding his advice, Mallory pursues her dream man, the wealthy and debonair Jean-Luc Chevalier, son of her company's CEO, visiting her NY office from Paris. He's never noticed Mallory on his previous twelve trips, but maybe thirteen's her lucky number.

But everything goes awry from the start. Mallory's attempts to charm and allure Jean-Luc end in twisted ankles, house fires, and misspelled tattoos. Yet somehow, she draws Jean-Luc closer. When one mishap after another leads to a marriage proposal, Mallory believes her luck's finally changing-despite Benji's increasingly desperate warnings.

By marrying Jean-Luc, Mallory could have everything she's always wanted: financial security, family, and a flat in France. Fixated on her dream guy, she fails to notice her best friend's jealousy and heartbreak. But as she navigates a world of secrets, lies, and culture shock, she begins to fear her fairytale engagement to Jean-Luc may cost her the one thing money can't buy-the one person who's loved her all along. And losing Benji would be her worst luck yet.