Infections get out of hand as the villainous Dr. Plague is out and about spreading viruses to the peaceful villages. As a new robotic recruit to the Healing Epidemic Ludicrousness Program, your task is to eliminate the viruses in the area and save the victims of Dr. Plague's experiments. Equipped with a Sanitization Launcher and a Virus Detector, you battle through waves of changing infections and manage the population to keep the situation from getting too chaotic. A simple game of curing the enemy quickly becomes a battle against time and a test of finding the lesser of two evils.