NieR:Automata Ver1.1a Part 2

About the story

Series background: In the year 5012, aliens suddenly invade Earth. The invaders and the machine lifeforms they create threaten humanity with extinction. The surviving humans flee to the Moon and use android soldiers to launch a counteroffensive to reclaim Earth. Yet ever-multiplying machine lifeforms stand in their way, and the war reaches a stalemate. As their ultimate weapon, humanity sends the new YoRHa android force to Earth. Newly deployed 2B joins the advance reconnaissance android 9S on a shared mission, but along the way they encounter many puzzling phenomena.