Lifelong friends Kate, Evie and Charlie are in a rut. Kate spends her days at a middling job and her nights alone or on failed dates. Evie is married with the in-laws from hell, wandering from one charitable cause to the next. Charlie has the girl of her dreams but just cant seem to pull her business (or her act) together. On the eve of Kates 30th birthday, she agrees to let Evie and Charlie throw her a party. But whats supposed to be a simple celebration becomes a wild whos who of past and present, and things quickly spiral out of control.