In the series premiere, the Oraga Stone is introduced as the vital power source that activates cyborg warriors aligned with either justice or darkness. A former ally turns traitor, seizing the M-77 Express to advance his own corrupt ambitions and upset the balance. In response, a specialized counterforce mobilizes aboard the Zetsurinou express, launching a high-speed pursuit to reclaim the artifact and neutralize the threat before it grows. The episode sets the stakes for the conflict, emphasizing strategy, loyalty, and the unique energy requirements of the stone.