Voltron: Defender of the Universe Season 2 Episode 42 The End Of Hazar's World

The Drule people themselves have spoken, gathering around Voltron with white flags of surrender. The planet will blow up any second, but the Explorer and her support ships don't have enough room on board to evacuate everyone. They take as many of the women and children as they can, leaving behind most of the population. Hazar and Dorma stay behind, hoping more ships will arrive before the planet goes!