Five years of unimaginable peace following two centuries of war left former saboteur Toru Acura without employment or purpose in life—until he rescues a mysterious wizard carrying a coffin on her back. However, when the silver-haired, coffin-wielding Chaika Trabant hires Toru and his sister, Akari, to join her on a perilous journey, Toru's existence of dull, meaningless tranquility is poised to come to an end!