In this quirky romantic comedy, bride-to-be Rachel (Piper Perabo) is lovestruck -- not with her groom, but with a beautiful woman who's attending their wedding. The two women become close friends, and when Rachel learns that Luce (Lena Headey) is a lesbian, she realizes that despite her happy marriage to Heck (Matthew Goode), she is falling for Luce. As she questions her sexual orientation, Rachel must decide between her stable relationship with Heck and her exhilarating new romance with Luce.