On a sunny day, invaders arrived from space. They were not little green men or amusing girls in school uniforms, however. Instead, they were hideous robots that defeated UN forces in seconds. Following this, the invaders (known as "eyeballs") wandered around and observed human society. In reality, they were peaceful unless attacked. They were also polite and adhered to all traffic laws. Nevertheless, they were aliens, and the people of Earth wanted them to return home. The Kitanohashi High School Magic Club took it upon themselves to defeat these foul robots and free the world.