A country bumpkin heads to the heart of Korea, Seoul. Due to the wishes of her grandmother, Yoru begins the first chapter of his life alone in a big unfamiliar city. On his first day in his new home, he discovers an old and worn diary in a corner of his apartment. Curious, he opened the diary and read its contents, but the diary was no ordinary diary, it was a path, a waypoint towards a world full of fantasy and martial arts.