Haruka's crisis isn't about losing a race, it's about losing the reason he ever got in the water. The film asks him the question every athlete dreads: what happens when you're good enough to compete with the best, and it still feels empty? He has to rebuild his entire reason for swimming from nothing, alone in the water that used to have all the answers.

Haruka stands at a crossroads after his first brush with international competition. A devastating encounter with the world-class swimmer Albert has shaken his confidence, and what the water means to him is now in doubt. He's no longer sure why he swims at all. Driven by a restless urge, Haruka commits himself to a grueling training schedule, pushing past his physical and mental limits as he struggles alone. His friends can only watch over him and trust him, while memories of Albert's cold, dry swimming keep replaying in his mind. Determined to grow faster and stronger, Haruka wants another race against Albert. This sports drama film continues directly from the first volume.