Once upon a time, a selfish king summoned the monstrous Bulkirin into the real world. The monster killed half of all human beings, leaving the rest helpless as to what to do. That is, until one day when a hero appeared and defeated the Bulkirin with the legendary "Seven Blade Sword." But…what does all this have to do with 8th grader Eun-Gyo Sung?! First, she gets suspended from school for fighting. Then, she runs away from home. The last thing she needed was to be kidnapped—and whisked into the past by a mysterious stranger named No-Ah!