With youngest sister Hallie getting married, the three Walsh sisters reunite at their family's beach house for the big event. It's a celebratory affair, rife with cherished traditions.

But families are complicated, and these sisters are no exception. Claire, the eldest, no longer believes in love after years working as a divorce attorney, and she resorts to taking her "work husband" as her date to convince her family otherwise. Middle sister, Amy, fears a confrontation with the man who broke her heart by announcing he was marrying someone else. And although Hallie has always lived a charmed life, she's getting cold feet about marrying her childhood sweetheart.

As the Walsh sisters grapple with the secrets they've kept from one another, they must decide if Hallie's wedding is a chance to mend mistakes of the past...even if it means confronting their feelings about love, life, and one another.