R.D. spends most of this series chasing a legend his dead father told him about, and the show doesn't care if you're bored waiting for the actual plot to show up. When it finally does arrive, it reframes everything you've been watching as pieces of something larger, a trick that only works if you stuck around through the meandering episodes of pure Zoid combat. The fusion sequences are the real draw, not filler, mechanical transformations that earn their screen time through sheer visual invention, each one designed like a reward for paying attention to a show that asks for faith before it asks for understanding.

R.D. works deliveries for Mach Storm, a company that also fields a Zoid battling team, to save money for his search for the Alpha Zoid, a legendary Zoid his father told him rumors about and one he believes in wholeheartedly. In his first Coliseum battle, R.D. comes up against a team able to fuse Zoids together. He soon finds out that he owns a Zoid capable of fusing with his own, Liger Zero. From there, his journey to learn the truth about the Alpha Zoid gets underway in this sci-fi mecha adventure.