Mitsuha Miyamizu is a high school girl living in the countryside town of Itomori. She yearns for a life in Tokyo as she is sick of living in the countryside. At the same time, Taki Tachibana, a high school student, lives in Tokyo and has a great interest in architecture, aiming to become an urban planner in the near future.

One day, Mitsuha dreams of herself as a boy living a life in the dense capital, while Taki dreams of living as a girl in the rural town of Itomori. As time passes by, the two discover that these are not just dreams, but that they actually swap bodies upon falling asleep! Kimi no Na wa. revolves around Mitsuha and Taki as they experience the supernatural. With both of them working together to deal with the strange phenomenon, how will this impact their everyday life?