Years after the events of Megazone 23 II, the only city on Earth is the supposedly idyllic Eden. There lives Eiji Takanaka, a B Level hacker who has just been accepted into EX, the organization that controls Eden. However, before his first day on the job, he becomes embroiled in a network war, a legendary figure named EVE, and a plot to re-inhabit the Earth.

Bander is a 17-year-old boy from Earth who lives on a distant planet, which is populated by human shape-shifters who feed off of vegetables and animal tails. Violence soon breaks out, as invaders launch an attack on Bander's new planet. This was Japan's first 2-hour animated film for television. The program received high ratings when broadcast as part of a set of 24-hour TV programs called "Ai wa Chikyu wo Sukuu" on Nippon Television. After a long gap since his last animated film for television, this work fully reflects Osamu Tezuka's desire to achieve theatrical quality with this production.