In the summer of 2024, divorced and jobless Alex Thompson returns to his childhood hometown of Riverton, Illinois, and moves into the old Harper house on Madison Street. There he discovers a hidden diary from 1968 belonging to seventeen-year-old Madison Harper—a spirited girl dreaming of journalism, first love, and escape amid Vietnam-era turmoil. As Alex reads her vivid entries, he begins writing “postcards” back to her, sharing his own struggles and the street’s enduring heartbeat. Through neighbors’ memories, a lost soldier’s story, and an unexpected connection to Madison’s daughter, Alex finds healing, purpose, and a renewed sense of home in this quiet, heartfelt tale of echoes across generations.
