Each year, at the start of the fall school year in September, Japan suffers from typhoons. That same month, in a small elementary school in a mountainous region, Saburô, a new red-haired pupil has just arrived with the wind. The children of the village thought they recognized in this strange boy who came from the city the spirit that they called “Matasaburô, the wind”. During two weeks of autumn, Matasaburô and the other children will do various experiments in nature.

A foreign transfer student from the city arrives one day in a Japanese country town. Enchanted by his air of mystery, his classmates nickname him "Matasaburou the Wind Imp" after a local legend. Eventually they become friends and spend many days playing in the countryside. One windy day, Matasaburou returns to the city, leaving his classmates to speculate that he really was Matasaburou the Wind Imp and that he flew away on the wind.

A girl moves from the city and goes to school in the country due to some circumstances in her father's job. Her new schoolmates keep her at a distance. There is a boy she'd like to get to know better, but she worries about how he might treat her and doesn't try to get closer. She begins to hate life in the countryside and longs to return to the city, but she ends up meeting a real god of wind.

Karin has lived alone in a secluded mountain village with her consumptive mother since her father died. Her worried grandfather advises her to send her mother to a sanatorium and be adopted by him, although she refuses to accept. On the Buddhist All Soul’s Day Festival in August, a messenger from her grandfather pays a sudden visit to her house.

Saburō Takada transfers from a city to a very small school. The village children suspect that Saburō is actually Matasaburō, the wind sprite.