Sloane has committed to keeping the marina — but committing and succeeding are different problems. A slick new marina complex opens across the harbor, backed by Graham Whitlock after Sloane's rejection sent him looking for a foothold elsewhere in town, and begins aggressively courting Calloway's longtime slip-renters. Digging into the marina's books to compete, Sloane and Isla uncover a hidden debt their father carried for years, tied to a decades-old business partnership with a man neither of them has ever heard of. Meanwhile, Beckett's engagement four years ago — which Sloane knew about only in the abstract — becomes concrete when his ex-fiancée Priya Chandrasekhar returns to Amber Cay for the summer, forcing Sloane to reckon with exactly how much of Beckett's life happened while she was gone.