When the Earth faces an unexpected invasion by the enigmatic Boazan Forces, a team of specially trained individuals steps up to defend the planet. Kenichi, Ippei, Daijirou, Hiyoshi, and Megumi pilot the formidable Choudenji Machine Voltes V, Earth's last line of defense against the Boazan and their fearsome Beast Warriors. As the Go Brothers delve into their past, uncovering the secrets of their lineage and their father's disappearance, they grapple with internal conflicts and conflicting emotions. Driven by their relentless quest to reunite with their missing father, the team ventures back to their origins. Teaming up with Earth-based rebels and allies from the alien world, the Voltes Team embarks on a new mission: to overthrow the oppressive ruler Zu Zanbajil and free the oppressed people of Boazan.