Aoi Hana is a normal female high school student, though she is extremely clumsy and thus tagged as good-for-nothing. But Hana wants to change herself and decides that finding a part time job would be taking the first step in that direction. Being an animal lover, Hana's job of dreams is encountering animals day-to-day and taking care of them; the zoo sounds like the perfect place for that. So when she happens to see a job offer from a local animal park, it's settled she'll attend a job interview.

When Hana arrives at the zoo, everything seems just fine. The Witching Hour Zoo might be going south, but altogether it's your regular animal park. Just a very normal zoo, one might think. But that's only until Hana gets to meet the zoo's director…