Tsuwabuki, a reserved student, crosses paths with the only members of the gardening club, including the new transfer student Sumomo Akihime. Pressured by a teacher, Tsuwabuki reluctantly joins the club only to encounter a peculiar individual with dog ears who inadvertently transforms him into a stuffed animal with a mysterious drink. To revert to his human form, Tsuwabuki must locate the chosen girl, Sumomo, and aid her in capturing the seven stardrops, all while keeping his true identity concealed from her.