The series is set many years after a devastating war, which killed 80% of the Earth's population. Earth is being watched by a group of beings known as The Third, named after the red eye on their forehead (Space Eye) that can access many types of computer systems. It follows the adventures of Honoka and Bogie. Honoka is a jack-of-all-trades who travels throughout the barren earth with the help of a sand tank operated by Bogie, an AI. She does various jobs like ridding areas of oversized spiders in order to make a living. One night while traveling through the desert, she comes upon a strange man named Iks. She saves Iks from a group of stigma ants in the vicinity. After saving his life, Iks requests to follow Honoka in her journeys so he can observe the world. During travel or at night, she recites poems by a writer named "Dana Myfree".