Zarkon is Dying

Season 2 / Episode 18

King Zarkon lies on his death-bed, and Lotor decides to use this opportunity to finish off his father and the Voltron force. Using a magic potion from Planet Doom's top alchemist, he arrives on Arus and turns the plant life against Princess Allura and her handmaidens. Keith and the Voltron Force must rescue the castle women from the monster flowers, and without the help of their Lions!