A professor built the Arcade Klonomat to clone cows and solve a milk shortage. Cows turned out to be uncloneable due to the protein content of their milk. The professor quietly sank the machine in a nearby swamp—which also happened to be adjacent to a nuclear power plant's waste storage. The Arcade Klonomat, powered by toxic fumes, has been creating swamp monsters ever since. The village it threatens fights them daily without knowing the professor is responsible. Meanwhile, the professor built a second Arcade Klonomat to clone the villagers themselves, charging them for the privilege of multiplying their own army to fight his first machine's output.