Three members of the 'Federation Survey Service', Rimia Greenwood, Led Wayline and Ashley Brown Brandon are charged with collecting data that will bring the dark parts of the end of the one year war to light. Among their subjects of interest is a man named 'Johnny Ridden'. Who was this enigmatic man that seems to be shrouded in mystery. note: this manga is heavy on the mech schematics taking up many pages to describe each mech model.

Suddenly, a fleet of ships with mysterious superweapons called the “Fleet of Fog” appeared all around the world. Humanity didn’t have the technology to fight such a fleet, so they were driven out of the sea... Seventeen years after the battle, for some reason, Gunzou Chihaya and his crewmates aboard the I-401 and the personification (Mental Model) of the I-401, Iona, started fighting the Fleet of Fog...

Universal Century 0096. Several months have passed since the incident surrounding Laplace's box also known as the Universal Century Charter. The Earth Federation Forces dispatches a group of investigators to the severed Axis which is drifting outside the Earth Sphere. Two civilians participate as members of the research group: Arlette Almage and Danton Hyleg. Both have pasts with government service to the Principality of Zeon and Neo Zeon as an engineer and test pilot. Having infiltrated Axis, the investigators come under attack inside a base where no one should be. Arlette and Dalton are confronted with an incident they never imagined.