At the secret Acid Factory, where they produce something no one will tell you about, toxic acid is involved in the production process. So one of the huge tanks with acid was damaged and misery spread in rivers and streams throughout the plant. The acid fumes had a strange effect on the workers, they turned into zombies, but the hero of the game managed to avoid this and he is the only one who can save the situation. To do this, he needs to collect the batteries and start the cleaning process. You cannot collide with zombies and fall into acid; even a small acid puddle will take away half of the hero’s life in the Acid Factory.