Planet Boazan's Big Battle (BOAZAN Sei no Dai Koubousen- ボアザン星の大攻防戦) - S1.E39

Voltes arrived in Boazan after successfully escaping Sodom and Gomorrah and the double-ring storm. Rebel slaves began the revolution causing civil war in Boazan. A fight with Zantan Commando Ships sealed the fate of General Bergan and Gururu. Meanwhile Prince Heinell was recovered from his sleep after he was shot by Kazarin with tranquilizer. He insisted to fight Voltes until the end.