In a future where Earth faces overpopulation and resource scarcity, the Moon's development emerges as a solution. While the lunar minerals bring prosperity to Earth, the reality for the Moon's settlers turns bleak. Shun Nonomura stumbles upon a powerful weapon that could liberate the lunar colonists from the oppressive Monopolice. Joining the resistance movement, Shun and his creation become pivotal in the fight for freedom, centered around the enigmatic alien structure called Dallos. Created in 1983 by Studio Pierrot, Dallos marks the world's first OVA series and showcases Mamoru Oshii's directorial debut, foreshadowing his future works like Angel's Egg, Urusei Yatsura movies, and Ghost in the Shell.