In that distant future, there is a group of teams that drive mobile suits and fight on the front lines. They are the United AC. In order to fight against the evil mysterious species SY, the United AC selected elites from many armies to form the 319 Special Forces. On the surface, it is an ordinary military and diplomatic force, but in fact it is a team that tracks and fights SY. Step by step approach, step by step exploration, and many unknown truths slowly surfaced... It turns out that everyone in the 319 Special Department has an unknown past and memory. What kind of relationship do they have with masturbation? Will the Last Holy War disappear or be reborn?