This story takes place in a small mountain village in Japan. Mitsuha, a high school girl of this village, leads a dull life and yearns for living in a big city. Then someday, she has a dream of her being a boy. In that dream she is in an unfamiliar house in Tokyo and surrounded with strange friends.Though she is confused, she feels happy leading a new life here. Meanwhile, a Tokyo high school boy named Taki also has a weird dream of him being a girl in a mountain village. That's how they meet each other in their dreams.