Tamaki (voiced by HOTTA Mayu), a fresher from Nagasaki, is determined to find a fairy-tale romance in Tokyo by joining the right student club; however, ends up joining the aviation club after damaging their prized glider.

Far from the university life of what Tamaki had dreamed of, she is at first reluctant to attend the training sessions, but gradually finds out the fascination of flying.

One day, in a joint training session with another university, she meets her estranged sister, Chizuru (voiced by KOMATSU Mikako).

Knowing that her sister remains cold towards her and feeling pressure at her first tournament, Tamaki loses her confidence and becomes doubtful about herself.

An unusual setting in the world of aviation, this coming-of-age animation is the achievement of collaboration of respectable creators and voice actors.

As blue thermal, an updraft that occurs under the blue sky which pushes the glider higher if riding it well, this beautiful work with spectacular depiction of the sky captures the ever-moving emotion of Tamaki tenderly.