It’s been hundreds of years since mankind immigrated to the planet Rafnas. The planet is abundant in the natural anti-gravity substance called “Rafna”, and the humans there unknowingly took it up inside their bodies and gained the ability to fly at will. Our story starts one day as the woman Lima, who has strong abilities and came to the village to investigate the river, meets Ragi, a man who has no Rafna inside him and can’t fly.