In Earth 2438, a virus spread very quickly. 66.6% Of the male citizens on the Earth were infected with the virus. Each one of them turned into an unscrupulous beast who only used the lower body to think about problems. They did not produce or work, and only thought about chasing flowers and butterflies all day long. As a result, the number of pregnant female citizens on the Earth began to increase crazily. Scientists named this virus Stallion Virus.