Inazma Delivery is set in the town of Babiden City, where everything runs on electricity. Hemingway is an earnest young man who works at the delivery company Inazma, which promises to deliver any package to its proper destination. One day, an extraterrestrial lost child in a shark costume named Bytheway appears and asks to be delivered to its home planet, and soon Hemingway and Bytheway are embroiled in all sorts of adventures.
One sunny day invaders came from space. They weren't little green men or funny girls wearing school uniforms, though. They were ugly robots which defeated the UN forces in seconds. After that the invaders (known as "eyeballs") roamed around and observed human society. In fact, they were peaceful unless attacked. They were polite and followed all the traffic laws, too. Still, they were aliens and the people of Earth wanted them to go home. The Kitanohashi High School Magic Club took it on themselves to defeat these foul robots and free the world.