The events of the anime series "Mobile Suit Gundam: The Witch From Mercury" take place in the distant future, where major corporations venture into space and build a vast economic system. The Vanadis Institute creates the perfect combat suit for the "Gundam" army, but this project is deemed dangerous for humanity and is shut down, with all its creators, known as "witches," being destroyed. Only Eleanor Samaya and her four-year-old daughter survive. Twenty-one years later, a girl named Suletta from Mercury transfers to an Earth technology school.