By the end of the 21st century, Earth faces a population explosion and dwindling resources, and developing the Moon becomes its answer. Lunar minerals bring prosperity back to Earth, but the settlers who left for the Moon pay a heavy price under the oppressive Monopolice. Shun Nonomura is on the verge of finding a weapon that could free the colonists, and a growing resistance gathers around a mysterious alien monument called Dallos. The movie is a theatrical cut of the four original OVA episodes, trimmed to 83 minutes, with a prologue of 50 new shots that introduces the world before the opening credits.