When 17-year-old Jamie discovers a stack of unsent letters hidden in their late grandmother’s attic—each addressed to someone named “Deetle”—they set off on a cross-country journey to deliver them. With nothing but a beat-up bicycle, a cassette Walkman, and a heart full of questions, Jamie traverses quiet highways and forgotten towns, collecting stories from strangers and uncovering a family secret long buried. As the miles stretch on, so does Jamie’s understanding of love, grief, and the threads that connect us all.