Tensions and distrust between rival nations Zafran and Revillia boiled over into all-out war, with both nations vying for control of the Decimators, ancient robots of war that nearly brought about the end of the world two centuries prior. With leaders on both sides unwilling to surrender, the only hope for humanity rested on the shoulders of Lean, a cadet, and Nataruma, a young woman with psychic abilities, as they sought to alter events from 200 years earlier and prevent the impending disaster.