Best friends for nearly twenty years, three women, all with the same birthday, plan to get together at a summerhouse in Maine to celebrate their approaching fortieth birthdays by taking stock of their lives, loves, choices, and dreams.

Twenty years since their first meeting in New York, Leslie, Madison, and Ellie have remained close friends. Gathering at a quiet Maine summerhouse for a shared 40th birthday celebration, the women take stock of their lives. None of them expect the gift that awaits them from Madame Zoya: the chance to turn their "what-might-have-beens" into reality.