Akira is a junior high school student who moved to his father's hometown, Akita, after his parents’ divorce. He can't get used to his new school and his days are filled with depression and resentment. One day, however, Akira sees a "green light" floating in the sky. After following the light, he reaches a crop circle in the rice paddies, where he meets Maki, a classmate who has never been to school. With this secret in common, the two grow closer and their once gray lives begin to shine. Meanwhile, Akira and his friends' junior high school is on the verge of closing due to a lack of students caused by depopulation. What is the mysterious "green light" trying to tell Akira and his cohorts, while the world of adults is also in turmoil?