Kline, a novice High Beast Knight is sent on reconnaissance into Laft, the Earth-Depths, where he comes across Alia, a Battle Maiden who has suffered terrible injuries and is close to death. In order to help her, he forms a partnership with the God of Death, Rooselevy. Alia lives, but in return the young knight must give up his life... In a world on the brink of war, the newly acquainted duo must fight destiny itself in order to save the world from the ever creeping darkness that is threatening to consume everything, and once and for all restore the balance of the world.