In the 23rd century, the world pattern has emerged as a tripartite force. The three major forces are engaged in overt and covert struggles with each other for their own interests, and the world is showing an intertwined situation of all-out cold wars and local hot wars.
Randall Harvey, a platoon soldier who was originally out of touch with the battlefield, was involved in a surprise attack from the opposing force, and his life also changed.
This is a story full of KUSO. You can see a lot of anime and game influences in the plot, names and settings.