Her mother used monsters to destroy a neighboring country --- Dino, a girl who has been oppressed because of that. A journey begins with Nico, a mysterious boy who bought her to spend time at her orphanage. Nico orders Dino to "recover the monsters summoned by her mother." With Nico's guidance, Dino discovers a talent for manipulating monsters. Will her journey lead to hope or an endless nightmare? An ultra-orthodox fantasy action adventure begins!