Frankie Baldwin has been working on her family winery but wants to do something of her own. When her father, Charles, hires an outsider to help out at the winery, on an impulse she buys the Sorrento farm from a friend who is in the middle of a divorce. It is only after the purchase that she finds out that she actually co-owns Sorrento with her former boyfriend and recently back-in-town Nate DeLuca who comes from the DeLuca winery. The two are forced to reach a compromise and decide to co-manage the property to bring in the harvest leading up to the Best Wine competition at the annual Autumn Harvest Festival.
As their first year at Sorrento Farms is coming to a close, they are looking forward to debuting their first vintage wine during the town's annual 'Summerfest' celebration. When the host winery for Summerfest pulls out at the last minute, Nate volunteers Sorrento to replace them, thinking it will be great publicity for their fledgling operation. Frankie, however, is more concerned with whether she can have their first Cabernet ready on time. The pressure is on them both to make a big splash for Sorrento at Summerfest to ensure the viability of their winery going forward. These two headstrong paramours are about to find out if you really can mix business with pleasure.