The story begins in Yuushu (幽州), where a couple of Yellow Scarves troops are harassing some villagers. Ryuubi Gundam steps in and easily chases off the two. He is thanked, and soon, Kousonsan Ez-8 arrives and comments on how Ryuubi should think before he acts. Kousonsan also informs Ryuubi of their Master, Roshoku GM Cannon, who will soon head out to subjugate the Yellow Scarves forces. Before he left, Roshoku presents the Ryuuteiken (龍帝剣) to Ryuubi...