In the distant future, the world has been invaded by aliens and their creations, the Machine Lifeforms. Humanity has sent androids, the YoRHa unit, to Earth to fight the machines. Two of these androids, 2B and 9S, have been sent on a mission, but soon they encounter strange and mysterious things.
The androids must fight to protect mankind while they uncover the secrets of the machines. Despite being lifeless, they strive to protect their species from extinction. Will they be able to save the world? It's up to 2B and 9S to find out.