Gunpla-loving high school student Atsuyama is not satisfied with making kits, so he finally comes up with the idea of ​​making a life-sized Acguy!

Universal Century 0084, it's been four years since the One Year War. The economy is in shambles and the Earth Sphere is slow to recover. Eventually, even the military is hit by the recession and many soldiers are laid off. The special police unit BGST was feared as the "Dagger of the Federation" but even they are in danger of layoff. But then they are involved in certain dealings that will keep them in business, but also will serve as their ultimate test. Will they pass?

This story takes place during December 0079 U.C. where two brothers are forced to traverse the North American territory as the rear guard of the retreating Principality of Zeon forces, using MSM-04 Acguy amphibious mobile suits, after the Principality fails to capture the Earth Federation's headquarters at Jaburo. However it doesn't take long before these two brothers are the only ones left alive and are faced with the prospect of travelling over two thousand miles, without supplies and backup.

The One Year War is entering its final stages and the Federation is finally catching up to The Principality of Zeon with Mobile Suit production. The only problem is that Federation pilots are inexperienced. To help solve this problem, the Federation drafted instructor corps to train pilots. These corps have only the cream of the crop as the members. And here is where the Canadian country ace, Yuji Alkana, takes the stage, as he is enveloped in a conspiracy weaved in the Federation ranks.