Andrey Makiya is a high-school boy with incredible intellect and perceptive skills. He is found laying unconcious in a desert and brought in by soldiers returning from a battle. With nobody ever seen a man dressed like Andrey he is put inside a cell as a prisoner, where he gets interrogated. He doesn't have any answers as he doesn't even remember anything besides his name. A mysterious beautiful girl appears and he regains his memories. What will he do after he finds out he has fallen into another world?