Before the car accident, Norio Tsuburaya (voiced by Hiroshi Shimono) would never have thought that the world he lived in was completely different from what he had seen before. Since he survived the car accident, the people he saw on the road were no longer the same as before, but groups of animals, which surprised Tsuburaya. What bothered him even more was that he suddenly became a hot commodity, and people of all genders pursued him, and the strongest among them was Madarame Kunimasa (voiced by Yoshihisa Kawahara). From Kunimasa, Tsuburaya learned that the original human race was divided into ape-man and Madara-man, and the animals Tsuburaya saw were their original forms. Kunimasa's words overturned Tsuburaya's three views, and as his contact with Madara-man deepened, all kinds of strange things and combinations appeared one after another. On the other hand, the relationship between Kunimasa's brother Yonekuni (voiced by Tomokazu Sugita) and his classmate Shiro Fujiwara (voiced by Wataru Hatano) has also changed.