讲述生活在巨大动物园中的兽少女的故事。某天,动物园中出现一位迷路的孩子,为了帮助孩子回家,兽少女们踏上了冒险的旅程。In the large animal park named Japari Park, animals have lived in the shape of human girls by the power of mysterious substances called Sandstar. However, Japari Park has started to dilapidate from time unknown. One day, a human child of amnesia gets lost in Japari Park. The child goes on a journey to find the child's way home with the help of animal girls, and they learn why Japari Park was dilapidated during their journey.