The main character Mikazuki Augus, from Chryse Guard Security (CGS), was on a mission to protect Cuderia Aina Bernstein, who wants Chryse, Mars’ city, to be independent of Earth’s ruling.
Mikazuki, with Orga’s request to defeat Gjallargorn, uses Gundam Barbatos, a major mobile suit that CGS used during Yakusaisen to fight.
The series is directed by Tatsuyuki Nagai based on story composition by Mari Okada.