A young tourist, travelling alone in a foreign country, suddenly encounters a young woman wearing a set of blue armour who seemed to pop out of thin air. After a brief conversation, she leaves abruptly, without telling him anything about herself. Eager to get to know her better, he follows her and suddenly finds himself in a magical land on the brink of war. While running around searching for the girl in the blue armour, he has to undergo a crash course in local history and customs, many elements of which are armed and quite dangerous. He gradually begins to uncover the truth about the woman he'd met, what she is looking for, and how it is all related to the growing threat of war.