In a fading village in the Japanese countryside, the school is about to be closed, which weighs heavily on the students. Freshly arrived from Tokyo with his father after an acrimonious divorce, the shy Akira escapes into drawing and agrees to participate in a mural project to mark the end of the institution. One day, he sees Maki on the roof of a farm and becomes fascinated by this mysterious teenager, who has left school for unclear reasons. Later, several people witness the strange appearance of green lights. Moreover, Akira discovers a crop circle, in which Maki is lying peacefully. They become friends and swear to keep silent about this fascinating discovery. But secrets are hard to keep in a small town and in the age of social networks, rumours spread quickly.