Zack and Benji are vacationing at an all-male resort in Palm Springs with their female friend Lily. While they haven't been in an open relationship previously, Benji convinces Zack that they should have an open relationship and explore the sexual possibilities, together. Comedic tragedy ensues when Zack's ex, Casey, shows up at the same resort with his hag in training, Penny. Casey isn't quite over Zack and Benji is not quite sure he's completely committed to Zack. To add to all the chaos, Zack isn't sure he's over Casey either. While the boys are enthralled in their own relationship mishaps, Penny and Lily compete for the bartender, which happens to be the only straight man for miles.