Ayumi, an ambitious treasure hunter equipped with dual gun-blades, embarks on a perilous expedition after an ancient map emerges from obscurity, pointing toward legendary artifacts hidden within a forgotten temple. According to myth, two divine brothers once dominated the cosmos—one virtuous, one malevolent—until the good sibling imprisoned the Dark One's essence in a powerful relic, concealing it alongside two equally formidable stones at great personal cost. These artifacts command immense power, capable of both salvation and damnation, and any mortal bold enough to claim them invites a devastating curse upon themselves. Driven by the allure of unimaginable riches and strength, Ayumi races against rivals and supernatural obstacles to reach the temple's inner sanctum, oblivious to the malignant force that stirs awake the moment she draws near to the stones.