In the wake of a post-Nier world, 2B, once forged for relentless combat, begrudgingly transitions into a role as a reluctant aide to humanity. Her stoic demeanor conceals the bitterness accumulated from centuries of being used as a tool of war, repeatedly facing death. As she navigates a society where humans and androids attempt to coexist, 2B struggles with the scars of her past, challenging her own resentment while reluctantly embracing a role that transcends the battlefield.