U.C. 0096. Argent Keil, an unofficial mercenary organization affiliated with neither the Federation nor Zeon, has been commissioned to assassinate Azami Megine, a high-ranking Federation official. The request comes from the Federation Forces, who cannot allow the reality of Azami's collusion with Zeon to be made public, but just before they were to set out, their fleet was attacked by none other than a Federation Forces' Jegan unit. In the midst of this extremely chaotic situation, a silver Gundam secretly owned by Argent Keil is launched into space.