In a small mountain village far from the metropolis, lives Gongshui Sanye, a high school girl from a witch family (voiced by Baishimeng). The reasons of campus and family have already made her full of troubles, but the strange events that have happened recently have made Sanye confused. I don't know since when, Sanba will become a high school boy living in Tokyo in his dream. There are strange classmates and friends, there are kind seniors and bustling streets, everything is so attractive and real. On the other hand, Taki (voiced by Takesuke Kamiki), a high school boy living in Tokyo, always comes to a strange mountain village in his dreams and leads a new life as a girl. Under the influence of that mysterious comet, Lihua and clover exchanged identities in the dream. They experience each other's lives from the perspective of others, with anger, laughter and warmth. It's just that they don't know that there is a big and heartfelt secret behind the identity exchange. This film is the box office champion of the local Japanese film in 2016.