Ami-chan looks like a normal girl, but she has a secret. Mysterious animals, such as Iyo, Kenta, and Issa visit her room every day. They seem to come from Animal Yokocho where animals are living, and they come here through “secret door” that exists somehow in her room. At first look, they look cute as stuffed animals, but their outrageous acts always annoy her. Furthermore, other animals begin to appear.