The game's story is set in an alternate timeline near-future Earth in the 2060s. The aftermath of a military accident that resulted in widespread disease, as well as the recent conclusion of careless nuclear war, has massively depopulated the planet, rendered much of the surface uninhabitable, and reduced once-great nations to shadows of their former selves. Androids used for labor and combat have become an important facet of life, and easily replicable and disposable androids known as Tactical Dolls (T-Dolls) are used by private military companies in the frontlines of numerous brushfire wars. In the game, the player takes the role of a fresh commander in a PMC, commanding T-Dolls to fight against a new AI threat.

[Source: Anime News Network]