After a banner year, Marcello Fortemani is eager to prove his value at his family's Napa vineyard. The youngest of four siblings, he's used to having his ideas ignored. But when he suspects a collaboration with local competitor, Whitaker Vineyard & Winery, Marcello quickly volunteers to take lead.

Excited for his big shot, he pre-celebrates at the bar where he runs into Holly Whitaker—the babysitter of his preteen dreams. She's back in Napa, and... doesn't recognize him? Marcello isn't about to remind her, either. Especially, when she brings his fantasies to life with a fiery one-night stand.

But the day before the quarterly meeting, he learns his family's vineyard isn't partnering but acquiring hers. Now, she feels deceived, and he's shocked to find they're both vying for international exports director. What started as a steamy night escalates into a battle of pranks and tactics as they gear up for a brand test at Vintner's Weekend in Tuscany.

Despite the competition, their chemistry is undeniable—she lets him take care of her, and he finds belonging. But will they fight to win, or call a truce for love?