Galactania is a planet where most of the inhabitants are made up of machines and robots. One day, a spaceship crash landed in Galactania. A mortally wounded crew member entrusts the inhabitants of Galactania with a baby girl named "Noel".

Time passed, and Noel grew up without incident thanks to the residents. Meanwhile, the residents are building a large rocket so that Noel can return to his home planet. However, for some reason, those who want to make Noel their own also begin to act behind the scenes.

This is a story about Galactania, which began to change little by little with Noel at the center.