Seyun and Yoojin have been friends since childhood despite their differing personalities - Seyun, a slender and sly high-schooler with a mysterious past, and Yoojin, a tough and rigid Judo star. However, after a heartbreaking event affects Seyun's family, he is forced to leave his home and bid farewell to Yoojin. They end up going their separate ways, attending different schools, and making new friends. Years later, as they navigate their divergent paths, their friendship is put to the test. When old emotions are rekindled, a tumultuous struggle ensues, as dark secrets are revealed and unexpected twists unravel, straining their hearts and friendship.
