In a future where humankind lives in an artificial ring around the Earth and social status is determined by strata, Mitsu, the orphaned son of a window washer, takes on his father's job and discovers the hidden lives of the ring's inhabitants.
Far in the future, humankind has evacuated the earth in order to preserve it. Humans now reside in a gigantic structure that forms a ring around the earth, thirty-five kilometers up in the sky. The society...
