Seventeen-year-old Josiah Cooper never quite fit into the rhythm of small-town life in the Seattle suburbs. But when a group of high school seniors pulls him into their world, his summer transforms into one of adventure and belonging-late-night drives, breathtaking hikes, and the kind of friendships that make everything feel possible. Yet, as carefree days give way to deeper challenges, Josiah must navigate the unraveling of his parents' marriage, the ache of unspoken love, and a tragedy that changes him in ways he never thought possible. Through it all, he discovers that growing up means balancing the thrill of new experiences with the pain of loss-and finding hope even in life's toughest moments. A heartwarming and nostalgic coming-of-age story, Through Summer's End explores the joy of adventure, the strength of friendship, and the resilience it takes to embrace all of life's changes.