In the half of 21st century, humans leave the Earth and live in space. In order to adapt to the environment and deal with the hostile aliens, genetically engineered children are artificially raised and trained to be pilots of armed robots.

Earth year 2110. Having expanded into space and secured many asteroids abundant in natural resources, it seemed mankind's prosperous future was assured. However, Earth is now being invaded by Urgal, a mysterious galactic empire from Jupiter. Just as mankind is facing certain destruction, the secret military agency MJP undertakes a gene manipulation project to create humans who can adapt to life in space. The result is Team Rabbits, a group of children who are given combat devices called "Ash" and sent to the front line as shields for the Global Defense Force (GDF).—Crunchyroll