In a small town in the United States, many people died mysteriously. Their bodies were mutilated by unidentified objects. Health Minister Mike Chase found that most of the town was built on a toxic landfill. This toxic waste changed the genes of the slugs, turning them into carnivorous monsters that reproduced at an alarming rate. In order to save the residents of the town, Mike and his friends rushed to the slugs' lair with special potions.