Thirty years ago, two families shared seven magical summers together, vacationing in a shared beach house on the white sands of Destin, Florida. For three months every year, they basked in laughter, love, and endless beachside memories... until a mysterious falling out ended those sun-soaked summers, leaving the families estranged for decades. When that very house—newly renovated and twice the original size—goes up for sale, it sparks an unexpected reunion among the five adults who'd spent their teenage summers there.

Hope Lanover needs a vacation. Her relationship has imploded, her creative ambitions have flatlined, and she can’t seem to locate the girl she used to be. So when her best friend invites her on a luxury cruise, she goes along with it, despite decidedly not being a cruise person.

Ellie didn’t expect to fall in love while interrailing through Europe. But she also didn’t expect to meet a man like Ash. Three blistering days in Lisbon is all it takes to form an unforgettable connection—a bond deep enough for them to scrap their itineraries and plan to meet again in Spain. But Ellie arrives late, and Ash is nowhere to be found.

Every summer, Vivian Levy and Lucy Webster spend a month with their father at his lake house—separately. Raised in New York City, Vivian is an ambitious sommelier with a secret that could derail her future. Lucy grew up in a tiny Maine town, where she now teaches high school English while watching her marriage unravel. They’ve never met. While Lucy envied her half-sister from afar, their father kept Vivian in the dark. When Vivian arrives at the lake to spread his ashes and sell his cabin, she's shocked to find Lucy there, awaiting his return.

Despite managing bookstores on the same Boston street, Josie Klein and Ryan Lawson have never interacted much—Josie’s store focuses on serious literature, and Ryan’s sells romance only. But when the new owner of both stores decides to combine them, the two are thrust into direct competition. Only one manager will be left standing, decided by who turns the most profit over the summer.