A girl arrives at university desperate to feel alive, smacks a glider on her first day, and gets trapped in a sport nobody warned her about. Glider flying demands the kind of quiet focus that volleyball never did, no crowd, no scoreboard, just you and the thermal currents holding you up. By the time she understands what Kuramochi is actually teaching her, the film has already shifted from "girl joins club" into something about learning to love something that doesn't love you back, at least not in ways you can measure or control.

Tamaki Tsuru, who spent high school thinking only about volleyball, moves from Nagasaki to a university in Tokyo hoping for a normal college life full of club activities and romance. Things go wrong almost at once: she accidentally damages a glider and has to work off the cost as a helper in the aviation club. The job is nothing like the campus life she pictured, and she is unhappy with it. Then Kuramochi, the club leader and a glider pilot, takes her under his wing and brings her up for a flight. From that first time in the air, Tamaki is captivated by the vast beauty of the sky. Blue Thermal is a sports drama film about a newcomer finding an unexpected pull toward gliding.