In the Year F.C. (Future Century) 60, much of mankind inhabits space colonies which orbit the Earth. Dominance over the colonies is decided once every four years by a large tournament in which each nation sends a single representative to fight the others with a giant robot called a Gundam. Domon Kashuu is selected to represent Neo-Japan in one of these tournaments, but he fights less to ensure his nation's victory than to find his brother, who has been blamed for the deaths of Domon's parents and the disappearance of a very dangerous weapon, the Devil Gundam (Dark Gundam).

Taba and the Girls of Kagura Total Security Inc. specialize in jobs where their enemy are "Phantom Cats". They have a few run ins with the various Government agencies, as well as a gang of Phantom Cats; blowing up a lot of stuff along the way. When one of their own is kidnapped, they have to get her back.

James Lynx was a pilot in the United Nations global army, one day he received notification that his wife, a Martian scientist, was killed during a lab experiment. His children blamed him and in despair, James quit the military and took up a job as a transporter between Earth and Mars, he had some slight hope of his wife still being alive. After a few years, he seemed to have given up all hope and turned to drinking, until one day he receives an orbital frame by the name of "Dolores," sent by his dead wife.

Taba and the Girls of Kagura Total Security Inc. are at it again. This time they have to battle a Gang of Phantom Cats and a mysterious enemy and assassin. And there are the run ins with the Government, the need for a new office, as well as sorting out the past to deal with. Luckily, they've got a stock pile of weapons and super technology to help.