The evil secret organization Gieg, seeking to dominate the world, has mobilized an endless army of combatants to eliminate the Saint Rangers—the guardians of justice. These soldiers fight without fear of death, driven by so-called loyalty to the organization. However, a dark secret lies behind their unwavering resolve: within Gieg's research facility exists a resurrection device capable of erasing the memories of fallen combatants and transferring their consciousness into new bodies, forcing them into an eternal cycle of battle. Amid this, the soul of Oriko, slain by a Saint Ranger, is reborn through the resurrection machine. By sheer chance, a surge of lightning energy that strikes the lab allows her to retain her past memories and sense of self. Desperate to confirm her identity, Oriko sneaks into the laboratory to manipulate the resurrection device. But her actions are discovered, and without trial or mercy, she and her ally Akina are sentenced to execution by Gieg's leader. Meanwhile, Oriko, Akina, and their comrade Rika—who stubbornly refuse to speak—face a sudden assault from a new monster, Imara!