The Eurondans began to be disgusted from seeing the Breeders breed like a plague across the planet, which prevented the "genetic purity" the Eurondans wanted. As a result, the Eurondans created plans to eradicate the Breeders forever. The Eurondans began to poison the atmosphere of their homeworld in order to eradicate the Breeders, but the Breeders managed to survive underground, just like Eurondans were. The Eurondans had built a massive underground complex before the war began in order to be able to house themselves and continue their plans to try to eradicate the Breeders.