After Lucy and her husband Owen get a little drunk at a dinner with friends, they learn that their friends have opened their marriage. They claim that opening their marriage reignited the passion they had for each other that had long been lost, and that they were happier than ever. Lucy balks at the idea, but after thinking on it for a while, decides to give it a try in hopes that she’ll stop feeling so invisible. She and Owen set ground rules, and add a end date to the experiment – 6 months, no questions asked, and no falling in love. When Lucy realizes she’s broken one of these rules, she has to decide if she wants to stay in her marriage or if this new romance is more intriguing.