Kennedy Martin is shocked when her ex calls days before his wedding, expressing serious second thoughts. Doesn’t he see his fiancée's actually the glaze to his doughnut? Now she’s got no choice but to crash his wedding and convince the man he’s with the right woman.

Instead, she crashes into the absolute last man she ever wanted to see: Maverick Owens, her old college nemesis. Maverick is still as awful, infuriating, and just The Worst as ever—even if he looks way too sexy in his cowboy hat. And of course he’s convinced she’s actually at the seaside ranch to ruin the wedding.

Now the only way to get some face time with the groom and save this marriage is to participate in all sorts of pre-wedding events…with Maverick. Stuck on a canoe, making small-talk at cocktail hour, and even a hoedown with her worst enemy? This just might be the longest week of her life…