Twenty-two-year-old Jenna has always been the serious type. She'd rather spend time at home with a good book than drink and party in bars, and she certainly isn't one for casual hookups. Twenty-five-year-old Nick, on the other hand, is the king of the casual hookup and a legendary party animal. Jenna and Nick are buddies despite their differences, but both scoff at the idea of being anything more than friends. When Nick makes a drunken promise to Jenna, though, he finds himself being drawn to her in ways that are far from platonic. A month after accepting a silly, alcohol-fueled challenge, Nick simply can't get Jenna off his mind. She's busy dating guys who are serious relationship material, but to her disappointment, not one makes her heart skip a beat. She, too, feels the growing connection between herself and Nick. The two potential lovers embark on a roundabout, and potentially disastrous, journey to find each other. On the way, Nick will have to get serious, Jenna will have to lighten up, and both will find out if opposites really do attract.