Cyndy had a hard enough time telling her family she’s a lesbian, she does not want to try to explain polyamory to them. So, rather than come out once again, her two partners—Maggie and Pen, a wilderness guide and a middle school science teacher—take turns coming home with her for major holidays. But when her sister’s boyfriend gets a job offer in Scotland, Maggie and Pen’s schedules leave Cyndy without a date to an incredibly last-minute wedding. Confronted with a thunderstorm, an off-white wedding dress, a mischievous cousin, and a lingering crush on the Maid of Honor, Cyndy finds the only two people who could complicate matters further are suddenly free—and they’re both on their way.

A young bride gets cold feet the day before her wedding, but she has one more thing to say to her Maid of Honor before she leaves—if her spurned friend is willing to listen.