Meet Kanon, a shy everyday high school student preparing for her graduation day with a final tour of her school. Singing a mysterious sheet music she found in the school music room sends her to a fantastic alternate world of adventure, cursed Sorcerers, war-torn lands, monsters, and skilled mercenaries. But she soon learns that in this strange new world of magic and swordplay, she is perhaps the greatest threat of all. Will Kanon survive in this fantasy world where people view her as a nightmare made reality? Let the Song begin, for nothing else will save her…!