"If you don't fulfill the wishes of a hundred cats, you'll turn into a cat!" This is the predicament of Junpei, a high school student who absolutely dislikes cats and is allergic to them. Due to a certain incident, he gains the ability to understand cat language. As he helps fulfill the wishes of cats, he forms various relationships—good or bad—with the cats' owners, including a beautiful young girl and an older sister-type woman. Meanwhile, he is misinterpreted by Kaede, a naturally charming girl who has unrequited feelings for him, and annoyed by Nick Yamusaroso, one of the cats. A cute romantic comedy involving this cat-loving high school boy and several beautiful girls is about to unfold!