On a quiet day at Graviton High, while the kicks are fast and the missile barrages are booming, Miss Ayumi ponders just where her life is leading. Meanwhile, out in the deserts of Iraq, scientists have unearthed a strange artifact bearing a symbol just like the one on Miss Ayumi's pendant. Strange things begin to occur, and the strangest of all is Miss Ayumi agreeing to an arranged marriage. With handsome hunk Kei, of all people! Still carrying a torch for the dashing young man, A-Ko and B-Ko take their fight to the school's gym-turned-wedding chapel, even as a massive fleet of aliens bears down upon the Earth. As the mecha are mobilized and missiles start to fly, C-Ko wonders to herself, where does she belong in all of this? It's the final chapter of Project A-Ko, and it won't go out without a bang!

Project A-ko 4 Final is the fourth movie in the original Project A-ko series!