Mobile Suit Gundam Twilight Axis summary: It has been several months since the occurrence of the Laplace's box episode, also referred to as the Universal Century Charter, in Universal Century 0096. With the Axis drifting beyond the Earth Sphere, the Earth Federation Forces have dispatched a team of investigators. Among the civilians in the research squad are Arlette Almage, previously an engineer for the Principality of Zeon, and Danton Hyleg, formerly a test pilot for Neo Zeon. As the team gains access to Axis, they unexpectedly encounter an assault in a base where they anticipated no one to be present. This unforeseen event puts Arlette and Danton in a complicated situation.