In Seabrook, lifelong rivals Diego Rivera and Y/N have clashed since childhood, though no one remembers exactly why it started. He’s the town’s carefree, popular surfer and lifeguard; she’s a responsible, driven student who balances school, volunteering, and work. Despite their constant arguments and very different personalities, their lives are deeply intertwined through family, friends, and shared places around town. As they approach junior year, their rivalry begins to blur into something more complicated, hinting that their connection may be stronger than either of them wants to admit.