When a Valentine's Day contest for Arizona's Cutest Couple throws two romance-challenged people together, can they survive a fake engagement? All Penny Merrill wants to do is run her own sweet shop in beautiful and ritzy Scottsdale, Arizona, but her money-hungry mother and conniving stepfather are making it nearly impossible to keep her dream alive. When Penny finds an advertisement for a Valentine's Day contest for Arizona's Cutest Couple, with the winnings being enough to enable her to hold on to her floundering business, she comes up with an idea that just might work—if she can find the right man for the job. Commercial contractor Preston Ames is starting to develop feelings for Penny, and even though he's been through enough heartache to know that he should avoid her at all costs, he can't keep himself from visiting her sweet shop everyday. When Penny asks him to participate in a crazy scheme so that she can overturn her stepfather's underhanded business ploy, Preston is tempted to run the other way. But one look into her soulful blue eyes and he's a goner. Little does he know that just one picture will turn Penny into his sweet Valentine. But when the fact that Preston is a billionaire comes to light, and Penny and Preston compete against another couple whose heartache transcends all of their misconceptions about love, will they do the right thing? And in the process, discover a bond that is greater than they thought was even possible?