In this world, humans are evolving, animals are evolving, and plants are also evolving. The person who stands at the top of the evolutionary pyramid is called a god. Animals and plants that have reached the pinnacle of evolution are called demons. In the year 2012 in a certain parallel dimension, the doomsday predicted in the ancient times has come, and darkness has enveloped the whole world for three consecutive days. After the catastrophe, all humans, animals, and plants have embarked on a path of evolution.