Mai lives in Higashi Osaka with her father, mother and older brother; prone to unexplained fevers, she often misses school, but she returns on the eighth day of the new semester;Mai becomes caretaker of the class rabbit, Sumi-chan.

Mai runs around looking for an escaped rabbit and develops a fever. Her parents take her to the hospital, where the doctor suggests she change her living environment.

Struggling to achieve her dream of becoming a pilot, Mai builds bonds with various people in Higashi Osaka, a manufacturing town.

Struggling to achieve her dream of becoming a pilot, Mai builds bonds with various people in Higashi Osaka, a manufacturing town.

Struggling to achieve her dream of becoming a pilot, Mai builds bonds with various people in Higashi Osaka, a manufacturing town.

Struggling to achieve her dream of becoming a pilot, Mai builds bonds with various people in Higashi Osaka, a manufacturing town.