Eighteen-year-old Emerson Maxwell is preparing for her last summer at home before college, ready for sun, saltwater, and whatever unexpected moments might come her way. But when her brother shows up with his college best friend, Brooklyn Warner, everything changes. Brooklyn was supposed to be a quiet houseguest. A background character. Instead, he's all sharp edges and lingering glances-nothing like Emerson imagined. After a year of pressure from demanding parents and conflicting dreams, Brooklyn needs this summer to breathe, to figure things out. Falling for his best friend's little sister was never part of the plan. As days stretch long under the Miami sun, rules blur and secrets simmer. And in the middle of it all, Emerson and Brooklyn begin to wonder if one summer could change everything-if they're willing to risk it.