In a small closed "ranch", there are many small animals that were captured. They live a leisurely life here, eating and sleeping every day. However, the window with a gap of less than five centimeters cannot contain the desire of these small animals to be free. However, the "rancher" and his "accomplices" are conducting an experiment on them - only when they become "human" can they be free, so a chaotic and fierce "evolution" is quietly staged here.