In an idyllic seaside resort in Maine, two families meet by chance, and what begins as a simple summer encounter soon turns into a whirlwind of emotions and secrets. Bart and Sylvia, a couple that seems to have lost everything in their relationship, cross paths with the family of young Molly, whose innocence contrasts sharply with the complicated past of the adults. As the summer heat intensifies, old grievances and hidden passions resurface, igniting a fire that threatens to consume everything in its path.
Molly, who is Sylvia's daughter, cannot help but fall in love with Johnny, Bart's son, a romance that blossoms to the rhythm of the waves and the sea breeze. But youthful love faces the ghosts of their parents' past, where decisions made in their youth color present and future relationships. Tension rises when an old romance between Bart and Sylvia is revealed, further complicating the emotional landscape surrounding the young lovers.
As the lives of both parents intertwine with those of the teenagers, the story reflects on the nature of desires, regret, and the quest for redemption. The choices each of them makes during that hot summer will have repercussions that change their lives forever. Can old wounds heal and allow for a new beginning, or will the legacy of their past decisions be too heavy a burden to bear?