In the not so distant future much of the earth has been submerged under the sea or destroyed by earthquakes. At the center of the turmoil is the mysterious Orphan. Orphan may or may not be the original cause of the cataclysms. Orphan`s goal is to raise a ship hidden deep beneath the sea to the surface, but doing so would result in the destruction of all humans except for the small number which are loyal to Orphan. Orphan`s agents pilot mysterious mecha known as Grand Cheres, and search the world for mysterious, giant disks which occasionally appear, flying at high speeds and wrecking much of the countryside, or cities, when they hit the ground. After a dying disc almost kills Hime, a Brain Powerd is born from the disc. Brain Powerds are another type of Mecha, similar to but not the same as Grand Cheres. Hime becomes the Brain Powerd`s pilot, forming a symbiotic relationship with the living mecha and joins an International Organization dedicated to stopping Orphan, or at the very least saving humanity should Orphan succeed.

Agerna is a planet rich in Vizorium, the one mineral necessary to space travel. So when a series of mysterious attacks on mining operations has the governments of the world pointing fingers and blaming each other, the World Welfare & Works Association naturally sends in their top agents to investigate. But are the lovely angels up to the task of stopping a mad scientist bent on taking a long dormant alien race to its final evolutionary form? Throw in a thief who's hunting a bottle of World War II-vintage wine and it's a safe bet that nobody on the planet is safe. It's more chaos, more mayhem and even more destruction than ever before as the Dirty Pair take on their wildest case yet!

Mayfly reveals Cima's backstory in flashbacks as she reflects on her past prior to the events of Episode 13. It reveals that Cima and her unit poisoned a Side 5 colony using G-3 nerve gas, under orders, but were treated as pariahs afterwards by their own countrymen for committing such an atrocity. At the end of the war her superior refused to let her retreat to Axis. Because their home colony Mahal had been converted into a weapon, Cima and her men were left stranded and homeless.

Picture drama included in the bluray release of 0083.