Mikazuki, with Orga’s request to defeat Gjallargorn, uses Gundam Barbatos, a major mobile suit that CGS used during Yakusaisen to fight.
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 from Earth’s ruling.
The series is directed by Tatsuyuki Nagai based on story composition by Mari Okada.